diff --git a/CODEOWNERS b/CODEOWNERS
new file mode 100644
index 000000000..8903550ba
--- /dev/null
+++ b/CODEOWNERS
@@ -0,0 +1,11 @@
+# The following volunteers have self-identified as subject matter experts
+# or interested parties over a particular area of this repository.
+# While requesting a review from someone does not obligate that person to
+# review a pull request, these reviewers might have valuable knowledge of
+# the problem area and could aid in deciding whether a pull request is ready
+# for merging.
+#
+# For more information, see the GitHub CODEOWNERS documentation:
+# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
+
+/scripts/translation/ @alfsb
diff --git a/README.md b/README.md
index e2f0d5925..a6af2b5cf 100644
--- a/README.md
+++ b/README.md
@@ -143,3 +143,8 @@ and find issues with it, they are located in the `scripts/qa/` directory.
 There might be some more just in `scripts/` but they need to be checked if they
 are still relevant and/or given some love.
 
+# Translation Tools
+
+There are also various scripts to ensure the quality and synchrony of
+documentation translations, located in the `scripts/translation/` directory.
+
diff --git a/scripts/translation/.gitignore b/scripts/translation/.gitignore
new file mode 100644
index 000000000..08b61f3ee
--- /dev/null
+++ b/scripts/translation/.gitignore
@@ -0,0 +1,2 @@
+# Persistent data shared between scripts
+.cache/
diff --git a/scripts/translation/README.md b/scripts/translation/README.md
new file mode 100644
index 000000000..7890be067
--- /dev/null
+++ b/scripts/translation/README.md
@@ -0,0 +1,111 @@
+# Some useful scripts for maintaining translation consistency of manual
+
+Some of these scripts only test some file contents or XML structure
+of translated files against their equivalents on `en/` directory.
+Others will try modify the translations in place, changing the
+translated files. Use with care.
+
+Not all translations are identical, or use the same conventions.
+So not all scripts will be of use for all translations. The
+assumptions of each script are described in each file.
+
+The `lib/` directory contains common code and functionality
+across these scripts.
+
+Before using the scripts, it need be configured:
+```
+php doc-base/scripts/translation/configure.php $LANG_DIR
+```
+
+## qarvt.php
+
+`qarvt.a.php` checks if all translated files have revtags in the
+expected format.
+
+## qaxml.a.php
+
+`qaxml.a.php` checks if all updated translated files have
+the same tag-attribute-value triples. Tag's attributes are extensively
+utilized in manual for linking and XIncluding. Translated files with
+missing os mistyped attributes may cause build failing or missing
+parts not copied by XIncludes.
+
+## qaxml.e.php
+
+`qaxml.e.php` checks if all updated translated files have
+the same external entities as the original files. Unbalanced entities
+may indicate mistyped or wrongly traduced parts.
+
+## qaxml.p.php
+
+`qaxml.p.php` checks if all updated translated files have
+the same processing instructions as the original files. Unbalanced entities
+may cause compilation errors, as they are utilized on manual in the build
+process.
+
+## qaxml.t.php
+
+`qaxml.t.php` checks if all updated translated files have
+the same tags as the original files. Different number of tags between
+source texts and target translations may cause compilation errors.
+
+Usage: `php qaxml.t.php [--detail] [tag[,tag]]`
+
+`[tag[,tag]]` is a comma separated tag list to check their
+contents, as some tag's contents are expected *not* be translated.
+
+`--detail` will also print line defintions of each mismatched tag,
+to facilitate bitsecting.
+
+## Suggested execution
+
+Structural checks:
+
+```
+php doc-base/scripts/translation/configure.php $LANG_DIR
+
+php doc-base/scripts/translation/qarvt.php
+
+php doc-base/scripts/translation/qaxml.a.php
+php doc-base/scripts/translation/qaxml.e.php
+php doc-base/scripts/translation/qaxml.p.php
+php doc-base/scripts/translation/qaxml.t.php
+```
+Tags where is expected no translations:
+```
+php doc-base/scripts/translation/qaxml.t.php acronym
+php doc-base/scripts/translation/qaxml.t.php classname
+php doc-base/scripts/translation/qaxml.t.php constant
+php doc-base/scripts/translation/qaxml.t.php envar
+php doc-base/scripts/translation/qaxml.t.php function
+php doc-base/scripts/translation/qaxml.t.php interfacename
+php doc-base/scripts/translation/qaxml.t.php parameter
+php doc-base/scripts/translation/qaxml.t.php type
+php doc-base/scripts/translation/qaxml.t.php classsynopsis
+php doc-base/scripts/translation/qaxml.t.php constructorsynopsis
+php doc-base/scripts/translation/qaxml.t.php destructorsynopsis
+php doc-base/scripts/translation/qaxml.t.php fieldsynopsis
+php doc-base/scripts/translation/qaxml.t.php funcsynopsis
+php doc-base/scripts/translation/qaxml.t.php methodsynopsis
+```
+Tags where is expected few translations:
+```
+php doc-base/scripts/translation/qaxml.t.php code
+php doc-base/scripts/translation/qaxml.t.php computeroutput
+php doc-base/scripts/translation/qaxml.t.php filename
+php doc-base/scripts/translation/qaxml.t.php literal
+php doc-base/scripts/translation/qaxml.t.php varname
+```
+
+# Migration
+
+## Maintainers with spaces
+
+The regex on `RevtagParser` was narrowed to not accept maintainer's names
+with spaces. This need to be confirmed on all active translations, or
+the regex modified to accept spaces again.
+
+## en/chmonly
+
+`en/chmonly` is ignored on revcheck, but it appears translatable. If it's a
+`en/` only directory, this should be uncommented on RevcheckIgnore.
diff --git a/scripts/translation/configure.php b/scripts/translation/configure.php
new file mode 100644
index 000000000..88d5ff40c
--- /dev/null
+++ b/scripts/translation/configure.php
@@ -0,0 +1,29 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Generate cached data for revcheck and QA tools.         |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+if ( count( $argv ) < 2 || in_array( '--help' , $argv ) || in_array( '-h' , $argv ) )
+{
+    fwrite( STDERR , "Usage: {$argv[0]} [lang_dir]\n\n" );
+    fwrite( STDERR , "See https://github.com/php/doc-base/tree/master/scripts/translation#readme for more info.\n" );
+    return;
+}
+
+new RevcheckRun( 'en' , $argv[1] , true );
diff --git a/scripts/translation/lib/CacheFile.php b/scripts/translation/lib/CacheFile.php
new file mode 100644
index 000000000..50e27348a
--- /dev/null
+++ b/scripts/translation/lib/CacheFile.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Class to handle data persistence.                       |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class CacheFile
+{
+    const CACHE_DIR = __DIR__ . '/../.cache';
+
+    private string $filename;
+
+    function __construct( string $file )
+    {
+        $this->filename = CacheFile::prepareFilename( $file , true );
+    }
+
+    public function load( mixed $init = null )
+    {
+        if ( file_exists( $this->filename ) == false )
+            return $init;
+        $data = file_get_contents( $this->filename );
+        return unserialize( gzdecode( $data ) );
+    }
+
+    public function save( $data )
+    {
+        $contents = gzencode( serialize( $data ) );
+        file_put_contents( $this->filename , $contents );
+    }
+
+    public static function prepareFilename( string $file , bool $createCacheDirs = false )
+    {
+        if ( str_starts_with( $file , '/' ) )
+            return $file;
+        $outPath = CacheUtil::CACHE_DIR . '/' . dirname( $file );
+        $outFile = rtrim( $outPath , '/' ) . '/' . $file;
+        if ( $createCacheDirs && file_exists( $outPath ) == false )
+            mkdir( $outPath , 0777 , true );
+        return $outFile;
+    }
+}
diff --git a/scripts/translation/lib/CacheUtil.php b/scripts/translation/lib/CacheUtil.php
new file mode 100644
index 000000000..bc71e98fe
--- /dev/null
+++ b/scripts/translation/lib/CacheUtil.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Common functions do load and save to cache files.       |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class CacheUtil
+{
+    const CACHE_DIR = __DIR__ . '/../.cache';
+
+    public static function load( string $path , string $file )
+    {
+        $filename = CacheUtil::prepareFilename( $path , $file , true );
+        if ( file_exists( $filename ) == false )
+            return null;
+        $data = file_get_contents( $filename );
+        return unserialize( $data );
+    }
+
+    public static function save( string $path , string $file , $data )
+    {
+        $outFile = CacheUtil::prepareFilename( $path , $file , true );
+        $contents = serialize( $data );
+        file_put_contents( $outFile , $contents );
+    }
+
+    public static function prepareFilename( string $path , string $file , bool $createDirs = false )
+    {
+        $baseDir = CacheUtil::CACHE_DIR;
+        $outPath = rtrim( $baseDir , '/' ) . '/' . $path;
+        $outFile = rtrim( $outPath , '/' ) . '/' . $file;
+        if ( $createDirs && file_exists( $outPath ) == false )
+            mkdir( $outPath , 0777 , true );
+        return $outFile;
+    }
+}
diff --git a/scripts/translation/lib/GitDiffParser.php b/scripts/translation/lib/GitDiffParser.php
new file mode 100644
index 000000000..9df98ac07
--- /dev/null
+++ b/scripts/translation/lib/GitDiffParser.php
@@ -0,0 +1,26 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Parse `git diff` to complement file state.              |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class GitDiffParser
+{
+    public static function parseNumstatInto( string $dir , RevcheckFileInfo $file )
+    {}
+}
diff --git a/scripts/translation/lib/GitLogParser.php b/scripts/translation/lib/GitLogParser.php
new file mode 100644
index 000000000..151d18456
--- /dev/null
+++ b/scripts/translation/lib/GitLogParser.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Parse `git log` to complement file state.               |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class GitLogParser
+{
+    static function parseInto( string $lang , RevcheckFileList & $list )
+    {
+        $cwd = getcwd();
+        chdir( $lang );
+        $fp = popen( "git log --name-only" , "r" );
+        $hash = "";
+        $date = "";
+        $skip = false;
+        while ( ( $line = fgets( $fp ) ) !== false )
+        {
+            // new commit block
+            if ( substr( $line , 0 , 7 ) == "commit " )
+            {
+                $hash = trim( substr( $line , 7 ) );
+                $date = "";
+                $skip = false;
+                continue;
+            }
+            // datetime of commit
+            if ( strpos( $line , 'Date:' ) === 0 )
+            {
+                $line = trim( substr( $line , 5 ) );
+                $date = strtotime( $line );
+                continue;
+            }
+            // other headers
+            if ( strpos( $line , ': ' ) > 0 )
+                continue;
+            // empty lines
+            if ( trim( $line ) == "" )
+                continue;
+            // commit message
+            if ( str_starts_with( $line , '    ' ) )
+            {
+                // commits with this mark are ignored
+                if ( stristr( $line, '[skip-revcheck]' ) !== false )
+                    $skip = true;
+                continue;
+            }
+            // otherwise, a filename
+            $filename = trim( $line );
+            $info = $list->get( $filename );
+
+            // untracked file (deleted, renamed)
+            if ( $info == null )
+                continue;
+
+            // the head commit
+            if ( $info->head == "" )
+            {
+                $info->head = $hash;
+                $info->date = $date;
+            }
+
+            // after, only tracks non skipped commits
+            if ( $skip )
+                continue;
+
+            // the diff commit
+            if ( $info->diff == "" )
+            {
+                $info->diff = $hash;
+                $info->date = $date;
+            }
+        }
+
+        pclose( $fp );
+        chdir( $cwd );
+    }
+}
diff --git a/scripts/translation/lib/OutputIgnoreArgv.php b/scripts/translation/lib/OutputIgnoreArgv.php
new file mode 100644
index 000000000..1b75c8ddf
--- /dev/null
+++ b/scripts/translation/lib/OutputIgnoreArgv.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Intercept and process $argv parameters.                 |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class OutputIgnoreArgv
+{
+    public string $command = "";
+    public string $options = "";
+    public bool $showIgnore = true;
+
+    function __construct( array & $argv )
+    {
+        $this->command = $argv[0];
+
+        foreach( $argv as $key => $arg )
+        {
+            if ( str_starts_with( $arg , "--add-ignore=" ) )
+            {
+                $file = OutputIgnoreArgv::cacheFile();
+                $list = $file->load( array() );
+                $line = substr( $arg , 13 );
+                if ( ! in_array( $line , $list ) )
+                {
+                    $list[] = $line;
+                    $file->save( $list );
+                }
+                exit;
+            }
+
+            if ( str_starts_with( $arg , "--del-ignore=" ) )
+            {
+                $file = OutputIgnoreArgv::cacheFile();
+                $list = $file->load( array() );
+                $line = substr( $arg , 13 );
+                $dels = 0;
+                while ( in_array( $line , $list ) )
+                {
+                    $key = array_search( $line , $list );
+                    unset( $list[$key] );
+                    $dels++;
+                }
+                if ( $dels == 0 )
+                    print "Ignore mark not found.\n";
+                else
+                    $file->save( $list );
+                exit;
+            }
+
+            if ( $arg == "--disable-ignore" )
+            {
+                $this->showIgnore = false;
+                unset( $argv[$key] );
+            }
+        }
+
+        $copy = $argv;
+        array_shift( $copy );
+        $this->options = implode( " " , $copy );
+    }
+
+    public static function cacheFile()
+    {
+        return new CacheFile( getcwd() . "/.qaxml.ignore" );
+    }
+
+    function pushAddIgnore( OutputIgnoreBuffer $output, string $mark )
+    {
+        $output->add( "  php {$this->command} --add-ignore=$mark\n" );
+    }
+
+    function pushDelIgnore( OutputIgnoreBuffer $output, string $mark )
+    {
+        $output->add( "  php {$this->command} --del-ignore=$mark\n" );
+    }
+}
diff --git a/scripts/translation/lib/OutputIgnoreBuffer.php b/scripts/translation/lib/OutputIgnoreBuffer.php
new file mode 100644
index 000000000..3db7573d1
--- /dev/null
+++ b/scripts/translation/lib/OutputIgnoreBuffer.php
@@ -0,0 +1,123 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Cache the output and shows if if not marked to ignore.  |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class OutputIgnoreBuffer
+{
+    public int $printCount = 0;
+
+    private string $header = "";
+    private string $filename = "";
+    private array $texts = array();
+
+    private OutputIgnoreArgv $args;
+
+    function __construct( OutputIgnoreArgv $args , string $header , string $filename )
+    {
+        $this->args = $args;
+        $this->header = $header;
+        $this->filename = $filename;
+    }
+
+    function add( string $text )
+    {
+        $this->texts[] = $text;
+    }
+
+    function addDiff( string $text , int $sourceCount , int $targetCount )
+    {
+        if ( $sourceCount == $targetCount )
+            return;
+        $prefix = "* ";
+        $suffix = " -{$targetCount} +{$sourceCount}";
+        if ( $sourceCount == 0 )
+        {
+            $prefix = "- ";
+            $suffix = $targetCount == 1 ? "" : " -{$targetCount}";
+        }
+        if ( $targetCount == 0 )
+        {
+            $prefix = "+ ";
+            $suffix = $sourceCount == 1 ? "" : " +{$sourceCount}";
+        }
+        $this->add( "{$prefix}{$text}{$suffix}\n" );
+    }
+
+    function addLine()
+    {
+        if ( count( $this->texts ) > 0 && end( $this->texts ) != "\n" )
+            $this->add( "\n" );
+    }
+
+    function print()
+    {
+        if ( count( $this->texts ) == 0 )
+            return;
+
+        $this->addLine( "\n" );
+        if ( count ( $this->texts ) > 0 )
+             $this->printCount++;
+
+        $head = $this->filename . ':' . $this->hash( false ) . ':';
+        $mark = $head . $this->hash( true );
+        $marks = OutputIgnoreArgv::cacheFile()->load( array() );
+
+        if ( $this->args->showIgnore )
+        {
+            if ( in_array( $mark , $marks ) )
+                $this->texts = array();
+            else
+                $this->args->pushAddIgnore( $this , $mark );
+
+            // old marks
+            while ( in_array( $mark , $marks ) )
+            {
+                $key = array_search( $mark , $marks );
+                unset( $marks[$key] );
+            }
+            foreach ( $marks as $mark )
+                if ( $mark != null )
+                    if ( str_starts_with( $mark , $head ) )
+                        $this->args->pushDelIgnore( $this , $mark );
+
+        }
+
+        $this->addLine( "\n" );
+
+        if ( count( $this->texts ) == 0 )
+            return;
+
+        print $this->header;
+        foreach( $this->texts as $text )
+            print $text;
+    }
+
+    private function hash( bool $withContents ) : string
+    {
+        $text = $this->header . $this->args->options;
+        if ( $withContents )
+            $text .= implode( "" , $this->texts );
+        $text = str_replace( " " , "" , $text );
+        $text = str_replace( "\n" , "" , $text );
+        $text = str_replace( "\r" , "" , $text );
+        $text = str_replace( "\t" , "" , $text );
+        return hash( "crc32b" , $text );
+    }
+}
diff --git a/scripts/translation/lib/QaFileInfo.php b/scripts/translation/lib/QaFileInfo.php
new file mode 100644
index 000000000..2b8eb3ded
--- /dev/null
+++ b/scripts/translation/lib/QaFileInfo.php
@@ -0,0 +1,61 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Common data for revcheck and QA tools.                  |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class QaFileInfo
+{
+    public string $sourceHash;
+    public string $targetHash;
+    public string $sourceDir;
+    public string $targetDir;
+    public string $file;
+    public int    $days;
+
+    function __construct( string $sourceHash , string $targetHash , string $sourceDir , string  $targetDir , string $file , int $days )
+    {
+        $this->sourceHash = $sourceHash;
+        $this->targetHash = $targetHash;
+        $this->sourceDir = $sourceDir;
+        $this->targetDir = $targetDir;
+        $this->file = $file;
+        $this->days = $days;
+    }
+
+    public static function cacheLoad() :array
+    {
+        return CacheUtil::load( "" , "QaFileInfo.phps" );
+    }
+
+    public static function cacheSave( array $itens )
+    {
+        // PHP serialize()
+        CacheUtil::save( "" , "QaFileInfo.phps" , $itens );
+
+        // CSV
+        $filename = CacheUtil::prepareFilename( "" , "QaFileInfo.csv" , true );
+        $fp = fopen( $filename , 'w' );
+        foreach( $itens as $item )
+        {
+            $line = array( $item->sourceHash , $item->targetHash , $item->sourceDir , $item->targetDir , $item->file , $item->days );
+            fputcsv( $fp , $line );
+        }
+        fclose($fp);
+    }
+}
diff --git a/scripts/translation/lib/RevcheckFileInfo.php b/scripts/translation/lib/RevcheckFileInfo.php
new file mode 100644
index 000000000..027c93fd8
--- /dev/null
+++ b/scripts/translation/lib/RevcheckFileInfo.php
@@ -0,0 +1,53 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: General data of a file in a documentation tree.         |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+ enum RevcheckStatus :string
+{
+    case Untranslated      = 'Untranslated';
+    case RevTagProblem     = 'RevTagProblem';
+    case TranslatedOk      = 'TranslatedOk';
+    case TranslatedOld     = 'TranslatedOld';
+    case TranslatedWip     = 'TranslatedWip';
+    case NotInEnTree       = 'NotInEnTree';
+}
+
+class RevcheckFileInfo
+{
+    public string $file = ""; // from fs
+    public int    $size = 0 ; // from fs
+    public string $head = ""; // from vcs, source only, head hash, may be skipped
+    public string $diff = ""; // from vcs, source only, diff hash, no skips
+    public int    $date = 0 ; // from vcs, source only, date of head or diff commit
+
+    public RevcheckStatus  $status; // target only
+    public RevtagInfo|null $revtag; // target only
+
+    function __construct( string $file , int $size )
+    {
+        $this->file = $file;
+        $this->size = $size;
+        $this->head = "";
+        $this->diff = "";
+        $this->date = 0;
+        $this->status = RevcheckStatus::Untranslated;
+        $this->revtag = null;
+    }
+}
diff --git a/scripts/translation/lib/RevcheckFileList.php b/scripts/translation/lib/RevcheckFileList.php
new file mode 100644
index 000000000..a227912b7
--- /dev/null
+++ b/scripts/translation/lib/RevcheckFileList.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: General file transversal, ordered file listing.         |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class RevcheckFileList
+{
+    private $list = array();
+
+    function __construct( $lang )
+    {
+        $this->loadTree( $lang );
+    }
+
+    function get( $file ): RevcheckFileInfo|null
+    {
+        return $this->list[ $file ] ?? null;
+    }
+
+    function iterator(): Iterator
+    {
+        return new ArrayIterator( $this->list );
+    }
+
+    function loadTree( $lang )
+    {
+        $dir = new \DirectoryIterator( $lang );
+        if ( $dir === false )
+            die( "$lang is not a directory.\n" );
+        $cwd = getcwd();
+        chdir( $lang );
+        $this->loadTreeRecurse( $lang , "" );
+        chdir( $cwd );
+    }
+
+    function loadTreeRecurse( $lang , $path )
+    {
+        $todoDirs = [];
+        $dir = new DirectoryIterator( $path == "" ? "." : $path );
+        if ( $dir === false )
+            die( "$path is not a directory.\n" );
+
+        foreach( $dir as $entry )
+        {
+            $name = $entry->getFilename();
+            $key = ltrim( $path . '/' . $name , '/' );
+            if ( $name[0] == '.' )
+                continue;
+            if ( $entry->isDir() )
+            {
+                $todoDirs[] = $key;
+                continue;
+            }
+
+            if ( RevcheckIgnore::ignore( $key ) )
+                continue;
+            $file = new RevcheckFileInfo( $key , $entry->getSize() );
+            $this->list[ $key ] = $file;
+        }
+
+        sort( $todoDirs );
+        foreach( $todoDirs as $path )
+            $this->loadTreeRecurse( $lang , $path );
+    }
+}
diff --git a/scripts/translation/lib/RevcheckIgnore.php b/scripts/translation/lib/RevcheckIgnore.php
new file mode 100644
index 000000000..a2a36d026
--- /dev/null
+++ b/scripts/translation/lib/RevcheckIgnore.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Files ignored on translation tree.                      |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class RevcheckIgnore
+{
+    public static function ignore( $filename ) : bool
+    {
+        // Ignore dot files
+
+        if ( $filename[0] == '.' )
+            return true;
+
+        // Ignore files other than xml assets
+
+        if ( ( str_ends_with( $filename , '.xml' ) || str_ends_with( $filename , '.ent' ) ) == false )
+            return true;
+
+        // Ignore autogenerated files
+
+        if ( str_starts_with( $filename , "entities." ) )
+            return true;
+        if ( str_contains( $filename , "/entities." ) )
+            return true;
+        if ( str_contains( $filename , "/versions.xml" ) )
+            return true;
+
+        // Only in English
+
+        if ( $filename == "contributors.ent" )
+            return true;
+        if ( $filename == "contributors.xml" )
+            return true;
+        if ( $filename == "appendices/license.xml" )
+            return true;
+        if ( $filename == "appendices/license.xml" )
+            return true;
+        if ( $filename == "appendices/extensions.xml" )
+            return true;
+        if ( $filename == "appendices/reserved.constants.xml" )
+            return true;
+        if ( $filename == "reference/datetime/timezones.xml" )
+            return true;
+        if ( str_starts_with( $filename , 'chmonly/') )
+            return true;
+        if ( str_ends_with( $filename , '/book.developer.xml') )
+            return true;
+
+        // Only in translations
+
+        if ( $filename == "translation.xml" )
+            return true;
+
+        // At least, do not ignore
+        return false;
+    }
+}
diff --git a/scripts/translation/lib/RevcheckRun.php b/scripts/translation/lib/RevcheckRun.php
new file mode 100644
index 000000000..8debc0408
--- /dev/null
+++ b/scripts/translation/lib/RevcheckRun.php
@@ -0,0 +1,143 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Calculate translation sync/diff status from two         |
+ *  |              directories.                                            |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class RevcheckRun
+{
+    public string $sourceDir;
+    public string $targetDir;
+    public RevcheckFileList $sourceFiles;
+    public RevcheckFileList $targetFiles;
+
+    // Separated lists
+    public array $filesOk = [];
+    public array $filesOld = [];
+    public array $filesRevtagProblem = [];
+    public array $filesUntranslated = [];
+    public array $filesNotInEn = [];
+    public array $filesWip = [];
+    public array $qaList = [];
+
+    function __construct( string $sourceDir , string $targetDir , bool $writeResults = true )
+    {
+        $this->sourceDir = $sourceDir;
+        $this->targetDir = $targetDir;
+
+        // load respective file tree
+        $this->sourceFiles = new RevcheckFileList( $sourceDir );
+        $this->targetFiles = new RevcheckFileList( $targetDir );
+
+        // original files get info from version control
+        GitLogParser::parseInto( $sourceDir , $this->sourceFiles );
+
+        // translated files get info from file contents
+        RevtagParser::parseInto( $targetDir , $this->targetFiles );
+
+        // match and mix
+        $this->calculateStatus();
+
+        if ( $writeResults )
+            QaFileInfo::cacheSave( $this->qaList );
+    }
+
+    private function calculateStatus()
+    {
+        // All status are marked in source files,
+        // except notinen, that are marked on target.
+
+        foreach( $this->sourceFiles->iterator() as $source )
+        {
+            $target = $this->targetFiles->get( $source->file );
+
+            // Untranslated
+
+            if ( $target == null )
+            {
+                $source->status = RevcheckStatus::Untranslated;
+                $this->filesUntranslated[] = $source;
+                continue;
+            }
+
+            // RevTagProblem
+
+            if ( $target->revtag == null || strlen( $target->revtag->revision ) != 40 )
+            {
+                $source->status = RevcheckStatus::RevTagProblem;
+                $this->filesRevtagProblem[] = $source;
+                continue;
+            }
+
+            // Translation compares ok from multiple hashs. The head hash or the last non-skiped hash.
+            // See https://github.com/php/doc-base/blob/090ff07aa03c3e4ad7320a4ace9ffb6d5ede722f/scripts/revcheck.php#L374
+            // and https://github.com/php/doc-base/blob/090ff07aa03c3e4ad7320a4ace9ffb6d5ede722f/scripts/revcheck.php#L392 .
+
+            $sourceHash = $source->head;
+            $targetHash = $target->revtag->revision;
+
+            if ( $targetHash == $source->diff )
+                $sourceHash = $source->diff;
+
+            $daysOld = ( strtotime( "now" ) - $source->date ) / 86400;
+            $daysOld = (int)$daysOld;
+
+            $qaInfo = new QaFileInfo( $sourceHash , $targetHash , $this->sourceDir , $this->targetDir , $source->file , $daysOld );
+            $this->qaList[ $source->file ] = $qaInfo;
+
+            // TranslatedOk
+
+            if ( $target->revtag->status == "ready" && $sourceHash == $targetHash )
+            {
+                $source->status = RevcheckStatus::TranslatedOk;
+                $this->filesOk[] = $source;
+                continue;
+            }
+
+            GitDiffParser::parseNumstatInto( $this->sourceDir , $source );
+
+            // TranslatedWip
+
+            if ( $target->revtag->status != "ready" )
+            {
+                $source->status = RevcheckStatus::TranslatedWip;
+                $this->filesWip[] = $source;
+                continue;
+            }
+
+            // TranslatedOld
+
+            $source->days = $daysOld;
+            $source->status = RevcheckStatus::TranslatedOld;
+            $this->filesOld[] = $source;
+        }
+
+        // NotInEnTree
+
+        foreach( $this->targetFiles->iterator() as $target )
+        {
+            $source = $this->sourceFiles->get( $target->file );
+            if ( $source == null )
+            {
+                $target->status = RevcheckStatus::NotInEnTree;
+                $this->filesNotInEn[] = $target;
+            }
+        }
+    }
+}
diff --git a/scripts/translation/lib/RevtagParser.php b/scripts/translation/lib/RevtagParser.php
new file mode 100644
index 000000000..a04db2fd1
--- /dev/null
+++ b/scripts/translation/lib/RevtagParser.php
@@ -0,0 +1,105 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Parse revision and credits from XML comments.           |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class RevtagInfo
+{
+    public string $revision = "";
+    public string $maintainer = "";
+    public string $status = "";
+    public string $credits = "";
+    public array  $errors = [];
+}
+
+class RevtagParser
+{
+    static function parseInto( string $lang , RevcheckFileList & $list )
+    {
+        foreach( $list->iterator() as $entry )
+            $entry->revtag = RevtagParser::parseFile( $lang . '/' . $entry->file );
+    }
+
+    public static function parseFile( string $filename ): RevtagInfo|null
+    {
+        $doc = XmlUtil::loadFile( $filename );
+        $ret = new RevtagInfo;
+        RevtagParser::parseNodeRecurse( $doc , $ret , $filename );
+        return $ret;
+    }
+
+    public static function parseText( string $contents ): RevtagInfo|null
+    {
+        $doc = XmlUtil::loadText( $contents );
+        $ret = new RevtagInfo;
+        RevtagParser::parseNodeRecurse( $doc , $ret );
+        return $ret;
+    }
+
+    public static function parseNodeRecurse( DOMNode $node , RevtagInfo $ret , $filename = "" )
+    {
+        if ( $node->nodeType == XML_COMMENT_NODE )
+            RevtagParser::parseComment( $node , $ret , $filename );
+
+        foreach( $node->childNodes as $child )
+            RevtagParser::parseNodeRecurse( $child , $ret , $filename );
+    }
+
+    public static function parseComment( DOMNode $node , RevtagInfo $ret , $filename = "" )
+    {
+        $text = trim( $node->textContent );
+
+        if ( str_starts_with( $text , "EN-" ) )
+        {
+            // /EN-Revision:\s*(\S+)\s*Maintainer:\s*(\S+)\s*Status:\s*(\S+)/ // restrict maintainer without spaces
+            // /EN-Revision:\s*(\S+)\s*Maintainer:\s(.*?)\sStatus:\s*(\S+)/   // accepts maintainer with spaces
+
+            $match = array();
+            $regex = "/EN-Revision:\s*(\S+)\s*Maintainer:\s*(\S+)\s*Status:\s*(\S+)/";
+            if ( preg_match( $regex , $text , $match ) )
+            {
+                $ret->revision = trim( $match[1] );
+                $ret->maintainer = trim( $match[2] );
+                $ret->status = trim( $match[3] );
+
+                if ( $ret->revision != "" && strlen( $ret->revision ) != 40 )
+                    $ret->errors[] = "Wrong hash size: {$ret->revision}";
+                if ( $ret->maintainer == "" )
+                    $ret->errors[] = "Empty maintainer.";
+                if ( $ret->status == "" )
+                    $ret->errors[] = "Empty status.";
+            }
+            else
+                $ret->errors[] = "No revtag.";
+        }
+
+        if ( str_starts_with( $text , "CREDITS:" ) )
+        {
+            $match = array();
+            $regex = "/CREDITS:(.*)/";
+            if ( preg_match( $regex , $text , $match ) )
+            {
+                $ret->credits = trim( $match[1] );
+
+                if ( $ret->credits == "" )
+                    $ret->errors[] = "Empty credits.";
+            }
+        }
+    }
+}
diff --git a/scripts/translation/lib/XmlUtil.php b/scripts/translation/lib/XmlUtil.php
new file mode 100644
index 000000000..292cffee2
--- /dev/null
+++ b/scripts/translation/lib/XmlUtil.php
@@ -0,0 +1,84 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Misc funcionality dealing with raw XML.                 |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/all.php';
+
+class XmlUtil
+{
+    public static function extractEntities( $filename )
+    {
+        $was = libxml_use_internal_errors( true );
+
+        $doc = new DOMDocument();
+        $doc->recover = true;
+        $doc->resolveExternals = false;
+        $doc->load( $filename );
+
+        $errors = libxml_get_errors();
+        libxml_clear_errors();
+        libxml_use_internal_errors( $was );
+
+        $ret = array();
+        foreach ($errors as $error)
+        {
+            if ( preg_match( "/Entity '(\S+)' not defined/" , $error->message , $matches ) )
+                $ret[] = $matches[1];
+        }
+        return $ret;
+    }
+
+    public static function listNodeType( DOMNode $node , int $type )
+    {
+        $ret = array();
+        XmlUtil::listNodeTypeRecurse( $node , $type , $ret );
+        return $ret;
+    }
+
+    public static function listNodeTypeRecurse( DOMNode $node , int $type, array & $ret )
+    {
+        if ( $node->nodeType == $type )
+            $ret[] = $node;
+        foreach( $node->childNodes as $child )
+            XmlUtil::listNodeTypeRecurse( $child , $type, $ret );
+    }
+
+    public static function loadFile( $filename ):DOMDocument
+    {
+        $contents = file_get_contents( $filename );
+        return XmlUtil::loadText( $contents );
+    }
+
+    public static function loadText( $contents ):DOMDocument
+    {
+        $was = libxml_use_internal_errors( true );
+
+        $doc = new DOMDocument();
+        $doc->preserveWhiteSpace = true;
+        $doc->recover            = true;
+        $doc->resolveExternals   = false;
+        $doc->substituteEntities = false;
+
+        $doc->loadXML( $contents );
+
+        libxml_clear_errors();
+        libxml_use_internal_errors( $was );
+
+        return $doc;
+    }
+}
diff --git a/scripts/translation/lib/all.php b/scripts/translation/lib/all.php
new file mode 100644
index 000000000..aa9ca28eb
--- /dev/null
+++ b/scripts/translation/lib/all.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Old style, require all file.                            |
+ *  +----------------------------------------------------------------------+
+ */
+
+ini_set( 'display_errors' , 1 );
+ini_set( 'display_startup_errors' , 1 );
+error_reporting( E_ALL );
+
+require_once __DIR__ . '/CacheFile.php';
+require_once __DIR__ . '/CacheUtil.php';
+require_once __DIR__ . '/GitDiffParser.php';
+require_once __DIR__ . '/GitLogParser.php';
+require_once __DIR__ . '/OutputIgnoreArgv.php';
+require_once __DIR__ . '/OutputIgnoreBuffer.php';
+require_once __DIR__ . '/QaFileInfo.php';
+require_once __DIR__ . '/RevcheckFileInfo.php';
+require_once __DIR__ . '/RevcheckFileList.php';
+require_once __DIR__ . '/RevcheckIgnore.php';
+require_once __DIR__ . '/RevcheckRun.php';
+require_once __DIR__ . '/RevtagParser.php';
+require_once __DIR__ . '/XmlUtil.php';
diff --git a/scripts/translation/qarvt.php b/scripts/translation/qarvt.php
new file mode 100644
index 000000000..e76196729
--- /dev/null
+++ b/scripts/translation/qarvt.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Check format for revtags and credits on XML comments.   |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+$langDir = "";
+
+switch ( count( $argv ) )
+{
+    case 1:
+        break;
+    case 2:
+        $langDir = $argv[1];
+        break;
+    default:
+        print_usage_exit($argv[0]);
+        return;
+}
+
+if ( $langDir == "" )
+{
+    $qalist = QaFileInfo::cacheLoad();
+    if ( count( $qalist ) > 0 )
+    {
+        foreach( $qalist as $qa )
+        {
+            $langDir = $qa->targetDir;
+            break;
+        }
+    }
+    else
+        print_usage_exit($argv[0]);
+}
+
+$list = new RevcheckFileList( $langDir );
+
+foreach( $list->list as $item )
+{
+    $file = $langDir . '/' . $item->file;
+    $revt = RevtagParser::parseFile( $file );
+
+    if ( count( $revt->errors ) == 0 )
+        continue;
+
+    print "qarvt: $file\n";
+    foreach( $revt->errors as $error )
+        print " $error\n";
+    print "\n";
+}
+
+function print_usage_exit($cmd)
+{
+    fwrite( STDERR , "  Wrong paramater count. Usage:\n" );
+    fwrite( STDERR , "    {$cmd} [lang_dir]:\n" );
+    exit;
+}
diff --git a/scripts/translation/qaxml.a.php b/scripts/translation/qaxml.a.php
new file mode 100644
index 000000000..6662b580d
--- /dev/null
+++ b/scripts/translation/qaxml.a.php
@@ -0,0 +1,84 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Compare attributes between XMLs.                        |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+$qalist = QaFileInfo::cacheLoad();
+
+foreach ( $qalist as $qafile )
+{
+    if ( $qafile->file == "bookinfo.xml" )
+        continue;
+    if ( $qafile->sourceHash != $qafile->targetHash )
+        continue;
+
+    $source = $qafile->sourceDir . '/' . $qafile->file;
+    $target = $qafile->targetDir . '/' . $qafile->file;
+
+    $s = XmlUtil::loadFile( $source );
+    $t = XmlUtil::loadFile( $target );
+
+    $s = XmlUtil::listNodeType( $s , XML_ELEMENT_NODE );
+    $t = XmlUtil::listNodeType( $t , XML_ELEMENT_NODE );
+
+    $s = extractTriple( $s );
+    $t = extractTriple( $t );
+
+    if ( implode( "\n" , $s ) == implode( "\n" , $t ) )
+        continue;
+
+    $header = true;
+    $match = array();
+
+    foreach( $s as $v )
+        $match[$v] = array( 0 , 0 );
+    foreach( $t as $v )
+        $match[$v] = array( 0 , 0 );
+
+    foreach( $s as $v )
+        $match[$v][0] += 1;
+    foreach( $t as $v )
+        $match[$v][1] += 1;
+
+    foreach( $match as $k => $v )
+    {
+        if ( $v[0] == $v[1] )
+            continue;
+
+        if ( $header )
+        {
+            print "qaxml.a: {$target}\n\n";
+            $header = false;
+        }
+
+        print "* {$k} -{$v[1]} +{$v[0]}\n";
+    }
+
+    if ( ! $header )
+        print "\n";
+}
+
+function extractTriple( array $list )
+{
+    $ret = array();
+    foreach( $list as $elem )
+        foreach( $elem->attributes as $attrib )
+            $ret[] = "{$elem->nodeName} {$attrib->nodeName} {$attrib->nodeValue}";
+    return $ret;
+}
diff --git a/scripts/translation/qaxml.e.php b/scripts/translation/qaxml.e.php
new file mode 100644
index 000000000..6d09cb1b1
--- /dev/null
+++ b/scripts/translation/qaxml.e.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Compare entities usage between XMLs.                    |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+$qalist = QaFileInfo::cacheLoad();
+$outarg = new OutputIgnoreArgv( $argv );
+
+foreach ( $qalist as $qafile )
+{
+    if ( $qafile->file == "bookinfo.xml" )
+        continue;
+    if ( $qafile->sourceHash != $qafile->targetHash )
+        continue;
+
+    $source = $qafile->sourceDir . '/' . $qafile->file;
+    $target = $qafile->targetDir . '/' . $qafile->file;
+
+    $s = XmlUtil::extractEntities( $source );
+    $t = XmlUtil::extractEntities( $target );
+
+    if ( implode( "\n" , $s ) == implode( "\n" , $t ) )
+        continue;
+
+    $output = new OutputIgnoreBuffer( $outarg , "qaxml.e: {$target}\n\n" , $target );
+
+    $match = array();
+
+    foreach( $s as $v )
+        $match[$v] = array( 0 , 0 );
+    foreach( $t as $v )
+        $match[$v] = array( 0 , 0 );
+
+    foreach( $s as $v )
+        $match[$v][0] += 1;
+    foreach( $t as $v )
+        $match[$v][1] += 1;
+
+    foreach( $match as $k => $v )
+    {
+        if ( $v[0] == $v[1] )
+            continue;
+
+        $output->add( "* &{$k}; -{$v[1]} +{$v[0]}\n" );
+    }
+
+    $output->addLine();
+    $output->print();
+}
diff --git a/scripts/translation/qaxml.p.php b/scripts/translation/qaxml.p.php
new file mode 100644
index 000000000..95cca01d2
--- /dev/null
+++ b/scripts/translation/qaxml.p.php
@@ -0,0 +1,83 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Compare PIs usage between XMLs.                         |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+$qalist = QaFileInfo::cacheLoad();
+
+foreach ( $qalist as $qafile )
+{
+    if ( $qafile->file == "bookinfo.xml" )
+        continue;
+    if ( $qafile->sourceHash != $qafile->targetHash )
+        continue;
+
+    $source = $qafile->sourceDir . '/' . $qafile->file;
+    $target = $qafile->targetDir . '/' . $qafile->file;
+
+    $s = XmlUtil::loadFile( $source );
+    $t = XmlUtil::loadFile( $target );
+
+    $s = XmlUtil::listNodeType( $s , XML_PI_NODE );
+    $t = XmlUtil::listNodeType( $t , XML_PI_NODE );
+
+    $s = extractPiData( $s );
+    $t = extractPiData( $t );
+
+    if ( implode( "\n" , $s ) == implode( "\n" , $t ) )
+        continue;
+
+    $header = true;
+    $match = array();
+
+    foreach( $s as $v )
+        $match[$v] = array( 0 , 0 );
+    foreach( $t as $v )
+        $match[$v] = array( 0 , 0 );
+
+    foreach( $s as $v )
+        $match[$v][0] += 1;
+    foreach( $t as $v )
+        $match[$v][1] += 1;
+
+    foreach( $match as $k => $v )
+    {
+        if ( $v[0] == $v[1] )
+            continue;
+
+        if ( $header )
+        {
+            print "qaxml.p: {$target}\n\n";
+            $header = false;
+        }
+
+        print "* {$k} -{$v[1]} +{$v[0]}\n";
+    }
+
+    if ( ! $header )
+        print "\n";
+}
+
+function extractPiData( array $list )
+{
+    $ret = array();
+    foreach( $list as $elem )
+        $ret[] = "{$elem->target} {$elem->data}";
+    return $ret;
+}
diff --git a/scripts/translation/qaxml.t.php b/scripts/translation/qaxml.t.php
new file mode 100644
index 000000000..3917302c9
--- /dev/null
+++ b/scripts/translation/qaxml.t.php
@@ -0,0 +1,312 @@
+<?php
+/**
+ *  +----------------------------------------------------------------------+
+ *  | Copyright (c) 1997-2023 The PHP Group                                |
+ *  +----------------------------------------------------------------------+
+ *  | This source file is subject to version 3.01 of the PHP license,      |
+ *  | that is bundled with this package in the file LICENSE, and is        |
+ *  | available through the world-wide-web at the following url:           |
+ *  | https://www.php.net/license/3_01.txt.                                |
+ *  | If you did not receive a copy of the PHP license and are unable to   |
+ *  | obtain it through the world-wide-web, please send a note to          |
+ *  | license@php.net, so we can mail you a copy immediately.              |
+ *  +----------------------------------------------------------------------+
+ *  | Authors:     André L F S Bacci <ae php.net>                          |
+ *  +----------------------------------------------------------------------+
+ *  | Description: Compare tag count and contents between XMLs.            |
+ *  +----------------------------------------------------------------------+
+ */
+
+require_once __DIR__ . '/lib/all.php';
+
+$tags = array();
+$showDetail = false;
+
+$qalist = QaFileInfo::cacheLoad();
+$outarg = new OutputIgnoreArgv( $argv );
+
+array_shift( $argv );
+while ( count( $argv ) > 0 )
+{
+    $arg = array_shift( $argv );
+
+    if ( $arg == "--detail" )
+    {
+        $showDetail = true;
+        $outarg->showIgnore = false;
+        continue;
+    }
+
+    $tags = explode( ',' , $arg );
+}
+
+foreach ( $qalist as $qafile )
+{
+    if ( $qafile->file == "bookinfo.xml" )
+        continue;
+    if ( $qafile->sourceHash != $qafile->targetHash )
+        continue;
+
+    $source = $qafile->sourceDir . '/' . $qafile->file;
+    $target = $qafile->targetDir . '/' . $qafile->file;
+
+    $output = new OutputIgnoreBuffer( $outarg , "qaxml.t: {$target}\n\n" , $target );
+
+    // First check, by tag contents, inner text
+
+    if ( count( $tags ) > 0 && $output->printCount == 0 )
+    {
+        $s = XmlUtil::loadFile( $source );
+        $t = XmlUtil::loadFile( $target );
+
+        $s = XmlUtil::listNodeType( $s , XML_ELEMENT_NODE );
+        $t = XmlUtil::listNodeType( $t , XML_ELEMENT_NODE );
+
+        typesNotCaseSensitive( $s );
+        typesNotCaseSensitive( $t );
+
+        $s = extractTagsInnerText( $s , $tags );
+        $t = extractTagsInnerText( $t , $tags );
+
+        $match = array();
+
+        foreach( $t as $v )
+            $match[$v] = array( 0 , 0 );
+        foreach( $s as $v )
+            $match[$v] = array( 0 , 0 );
+
+        foreach( $s as $v )
+            $match[$v][0] += 1;
+        foreach( $t as $v )
+            $match[$v][1] += 1;
+
+        foreach( $match as $k => $v )
+            $output->addDiff( $k , $v[0] , $v[1] );
+
+        if ( $showDetail )
+            foreach( $match as $tag => $v )
+                printTagUsageDetail( $source , $target , $tag , $output );
+
+        $output->print();
+    }
+
+    // Second check, by tag contents, inner XML
+
+    if ( count( $tags ) > 0 && $output->printCount == 0 )
+    {
+        $s = XmlUtil::loadFile( $source );
+        $t = XmlUtil::loadFile( $target );
+
+        $s = XmlUtil::listNodeType( $s , XML_ELEMENT_NODE );
+        $t = XmlUtil::listNodeType( $t , XML_ELEMENT_NODE );
+
+        typesNotCaseSensitive( $s );
+        typesNotCaseSensitive( $t );
+
+        $s = extractTagsInnerXmls( $s , $tags );
+        $t = extractTagsInnerXmls( $t , $tags );
+
+        $match = array();
+
+        foreach( $t as $v )
+            $match[$v] = array( 0 , 0 );
+        foreach( $s as $v )
+            $match[$v] = array( 0 , 0 );
+
+        foreach( $s as $v )
+            $match[$v][0] += 1;
+        foreach( $t as $v )
+            $match[$v][1] += 1;
+
+        foreach( $match as $k => $v )
+            $output->addDiff( $k , $v[0] , $v[1] );
+
+        if ( $showDetail )
+            foreach( $match as $tag => $v )
+                printTagUsageDetail( $source , $target , $tag , $output );
+
+        $output->print();
+    }
+
+    // Last check, simple tag count
+
+    if ( $output->printCount == 0 )
+    {
+        $s = XmlUtil::loadFile( $source );
+        $t = XmlUtil::loadFile( $target );
+
+        $s = XmlUtil::listNodeType( $s , XML_ELEMENT_NODE );
+        $t = XmlUtil::listNodeType( $t , XML_ELEMENT_NODE );
+
+        typesNotCaseSensitive( $s );
+        typesNotCaseSensitive( $t );
+
+        $s = extractNodeName( $s , $tags );
+        $t = extractNodeName( $t , $tags );
+
+        $match = array();
+
+        foreach( $t as $v )
+            $match[$v] = array( 0 , 0 );
+        foreach( $s as $v )
+            $match[$v] = array( 0 , 0 );
+
+        foreach( $s as $v )
+            $match[$v][0] += 1;
+        foreach( $t as $v )
+            $match[$v][1] += 1;
+
+        foreach( $match as $k => $v )
+            $output->addDiff( $k , $v[0] , $v[1] );
+
+        if ( $showDetail )
+            foreach( $match as $tag => $v )
+                printTagUsageDetail( $source , $target , $tag , $output );
+
+        $output->print();
+    }
+}
+
+function extractNodeName( array $list , array $tags )
+{
+    $ret = array();
+    foreach( $list as $elem )
+        if ( in_array( $elem->nodeName , $tags) || count( $tags ) == 0 )
+            $ret[] = $elem->nodeName;
+    return $ret;
+}
+
+function typesNotCaseSensitive( array & $nodes )
+{
+    // Types not case-sensitive: https://github.com/php/doc-en/issues/2658
+
+    if ( $nodes == null )
+        return;
+
+    foreach( $nodes as $node )
+    {
+        if ( $node->nodeName == "type" )
+        {
+            $text = trim( strtolower( $node->nodeValue ) );
+            switch( $text )
+            {
+                case "array":
+                case "string":
+                case "float":
+                case "bool":
+                case "null":
+                    $node->nodeValue = $text;
+                    break;
+            }
+        }
+    }
+}
+
+function extractTagsInnerText( array $nodes , array $tags )
+{
+    $ret = array();
+    foreach( $nodes as $node )
+    {
+        $tag = $node->nodeName;
+        if ( in_array( $tag , $tags ) == false )
+            continue;
+        $text = $node->textContent;
+        while( true )
+        {
+            $was = strlen( $text );
+            $text = str_replace( "\n" , " " , $text );
+            $text = str_replace( "\r" , " " , $text );
+            $text = str_replace( "  " , " " , $text );
+            if ( strlen( $text ) == $was )
+                break;
+        }
+        $ret[] = $tag . ">"  . $text;
+    }
+    return $ret;
+}
+
+function extractTagsInnerXmls( array $nodes , array $tags )
+{
+    $ret = array();
+    foreach( $nodes as $node )
+    {
+        $tag = $node->nodeName;
+        if ( in_array( $tag , $tags ) == false )
+            continue;
+        $text = $node->ownerDocument->saveXML( $node );
+        while( true )
+        {
+            $was = strlen( $text );
+            $text = str_replace( "\n" , " " , $text );
+            $text = str_replace( "\r" , " " , $text );
+            $text = str_replace( "  " , " " , $text );
+            if ( strlen( $text ) == $was )
+                break;
+        }
+        $ret[] = $text;
+    }
+    return $ret;
+}
+
+function printTagUsageDetail( string $source , string $target , string $tag , OutputIgnoreBuffer $output )
+{
+    $source = collectTagDefinitions( $source , $tag );
+    $target = collectTagDefinitions( $target , $tag );
+    if ( count( $source ) == count($target) )
+        return;
+    $output->addLine();
+    $s = null;
+    $t = null;
+    while ( count( $source ) > 0 || count( $target ) > 0 )
+    {
+        if ( $s == null )
+            $s = array_shift( $source );
+        if ( $t == null )
+            $t = array_shift( $target );
+        if ( $s != null && $t != null )
+        {
+            if ( abs( $s - $t ) < 1 )
+            {
+                $output->add( "\t{$tag}\t{$s}\t{$t}\n" );
+                $s = null;
+                $t = null;
+                continue;
+            }
+            if ( $s < $t )
+            {
+                array_unshift( $target , $t );
+                $t = null;
+            }
+            else
+            {
+                array_unshift( $source , $s );
+                $s = null;
+            }
+        }
+        if ( $s != null )
+        {
+            $output->add( "\t{$tag}\t{$s}\t-\n" );
+            $s = null;
+        }
+        if ( $t != null )
+        {
+            $output->add( "\t{$tag}\t-\t{$t}\n" );
+            $t = null;
+        }
+    }
+    $output->addLine();
+}
+
+function collectTagDefinitions( string $file , string $tag )
+{
+    $ret = array();
+    $text = XmlUtil::loadFile( $file );
+    $list = XmlUtil::listNodeType( $text , XML_ELEMENT_NODE );
+    foreach( $list as $node )
+    {
+        if ( $node->nodeName != $tag )
+            continue;
+        $ret[] = $node->getLineNo();
+    }
+    return $ret;
+}