abstract.xml Fix the error in the last example and CS (#4149)

Author: mmalferov

language/oop5/abstract.xml

@@ -36,47 +36,54 @@
    <programlisting role="php">
 <![CDATA[
 <?php
+
 abstract class AbstractClass
 {
-    // Force Extending class to define this method
+    // Force extending class to define this method
     abstract protected function getValue();
     abstract protected function prefixValue($prefix);
 
     // Common method
-    public function printOut() {
+    public function printOut()
+    {
         print $this->getValue() . "\n";
     }
 }
 
 class ConcreteClass1 extends AbstractClass
 {
-    protected function getValue() {
+    protected function getValue()
+    {
         return "ConcreteClass1";
     }
 
-    public function prefixValue($prefix) {
+    public function prefixValue($prefix)
+    {
         return "{$prefix}ConcreteClass1";
     }
 }
 
 class ConcreteClass2 extends AbstractClass
 {
-    public function getValue() {
+    public function getValue()
+    {
         return "ConcreteClass2";
     }
 
-    public function prefixValue($prefix) {
+    public function prefixValue($prefix)
+    {
         return "{$prefix}ConcreteClass2";
     }
 }
 
-$class1 = new ConcreteClass1;
+$class1 = new ConcreteClass1();
 $class1->printOut();
-echo $class1->prefixValue('FOO_') ."\n";
+echo $class1->prefixValue('FOO_'), "\n";
 
-$class2 = new ConcreteClass2;
+$class2 = new ConcreteClass2();
 $class2->printOut();
-echo $class2->prefixValue('FOO_') ."\n";
+echo $class2->prefixValue('FOO_'), "\n";
+
 ?>
 ]]>
    </programlisting>
@@ -96,32 +103,34 @@ FOO_ConcreteClass2
     <programlisting role="php">
 <![CDATA[
 <?php
+
 abstract class AbstractClass
 {
-    // Our abstract method only needs to define the required arguments
+    // An abstract method only needs to define the required arguments
     abstract protected function prefixName($name);
-
 }
 
 class ConcreteClass extends AbstractClass
 {
-
-    // Our child class may define optional arguments not in the parent's signature
-    public function prefixName($name, $separator = ".") {
+    // A child class may define optional parameters which are not present in the parent's signature
+    public function prefixName($name, $separator = ".")
+    {
         if ($name == "Pacman") {
             $prefix = "Mr";
         } elseif ($name == "Pacwoman") {
             $prefix = "Mrs";
         } else {
             $prefix = "";
         }
+
         return "{$prefix}{$separator} {$name}";
     }
 }
 
-$class = new ConcreteClass;
+$class = new ConcreteClass();
 echo $class->prefixName("Pacman"), "\n";
 echo $class->prefixName("Pacwoman"), "\n";
+
 ?>
 ]]>
    </programlisting>
@@ -138,35 +147,44 @@ Mrs. Pacwoman
     <programlisting role="php">
 <![CDATA[
 <?php
+
 abstract class A
 {
-    // Extending classes must have a publicly-gettable property.
-    abstract public string $readable { get; }
+    // Extending classes must have a publicly-gettable property
+    abstract public string $readable {
+        get;
+    }
 
-    // Extending classes must have a protected- or public-writeable property.
-    abstract protected string $writeable { set; }
+    // Extending classes must have a protected- or public-writeable property
+    abstract protected string $writeable {
+        set;
+    }
 
-    // Extending classes must have a protected or public symmetric property.
-    abstract protected string $both { get; set; }
+    // Extending classes must have a protected or public symmetric property
+    abstract protected string $both {
+        get;
+        set;
+    }
 }
 
 class C extends A
 {
-    // This satisfies the requirement and also makes it settable, which is valid.
+    // This satisfies the requirement and also makes it settable, which is valid
     public string $readable;
 
-    // This would NOT satisfy the requirement, as it is not publicly readable.
+    // This would NOT satisfy the requirement, as it is not publicly readable
     protected string $readable;
 
     // This satisfies the requirement exactly, so is sufficient.
-    // It may only be written to, and only from protected scope.
+    // It may only be written to, and only from protected scope
     protected string $writeable {
         set => $value;
     }
 
-    // This expands the visibility from protected to public, which is fine.
+    // This expands the visibility from protected to public, which is fine
     public string $both;
 }
+
 ?>
 ]]>
    </programlisting>
@@ -180,15 +198,20 @@ class C extends A
    <programlisting role="php">
 <![CDATA[
 <?php
+
 abstract class A
 {
     // This provides a default (but overridable) set implementation,
-    // and requires child classes to provide a get implementation.
+    // and requires child classes to provide a get implementation
     abstract public string $foo {
         get;
-        set { $this->foo = $value };
+
+        set {
+            $this->foo = $value;
+        }
     }
 }
+
 ?>
  ]]>
    </programlisting>