Fixed examples, and made some self-contained

language/oop5/anonymous.xml

@@ -185,9 +185,8 @@ class@anonymous/in/oNi1A0x7f8636ad2021
    <programlisting role="php">
     <![CDATA[
 <?php
-
 // Using an anonymous class
-$util->setLogger(new readonly class('[DEBUG]') {
+var_dump(new readonly class('[DEBUG]') {
     public function __construct(private string $prefix)
     {
     }

language/oop5/basic.xml

@@ -224,11 +224,16 @@ readonly class Foo
     <programlisting role="php">
 <![CDATA[
 <?php
+class SimpleClass {
+}
+
 $instance = new SimpleClass();
+var_dump($instance);
 
 // This can also be done with a variable:
 $className = 'SimpleClass';
 $instance = new $className(); // new SimpleClass()
+var_dump($instance);
 ?>
 ]]>
     </programlisting>
@@ -296,6 +301,9 @@ object(ClassD)#1 (0) {
     <programlisting role="php">
 <![CDATA[
 <?php
+class SimpleClass {
+    public string $var;
+}
 
 $instance = new SimpleClass();
 
@@ -375,16 +383,18 @@ bool(true)
     <programlisting role="php">
 <![CDATA[
 <?php
-echo (new DateTime())->format('Y');
+echo (new DateTime())->format('Y'), PHP_EOL;
+
 // surrounding parentheses are optional as of PHP 8.4.0
-echo new DateTime()->format('Y');
+echo new DateTime()->format('Y'), PHP_EOL;
 ?>
 ]]>
     </programlisting>
     &example.outputs.similar;
     <screen>
 <![CDATA[
-2016
+2025
+2025
 ]]>
     </screen>
    </example>
@@ -498,6 +508,14 @@ echo ($obj->bar)(), PHP_EOL;
     <programlisting role="php">
 <![CDATA[
 <?php
+class SimpleClass
+{
+    function displayVar()
+    {
+        echo "Parent class\n";
+    }
+}
+
 class ExtendClass extends SimpleClass
 {
     // Redefine the parent method
@@ -757,9 +775,10 @@ Does\Not\Exist
 namespace NS {
     class ClassName {
     }
+
+    $c = new ClassName();
+    print $c::class;
 }
-$c = new ClassName();
-print $c::class;
 ?>
 ]]>
     </programlisting>

language/oop5/decon.xml

@@ -236,6 +236,9 @@ function test(
      <programlisting role="php">
 <![CDATA[
 <?php
+$some_json_string = '{ "id": 1004, "name": "Elephpant" }';
+$some_xml_string = "<animal><id>1005</id><name>Elephpant</name></animal>";
+
 class Product {
 
     private ?int $id;
@@ -256,12 +259,11 @@ class Product {
         return new static($data['id'], $data['name']);
     }
 
-    public static function fromXml(string $xml): static {
-        // Custom logic here.
-        $data = convert_xml_to_array($xml);
+    public static function fromXml(string $xml): static {a
+        $data = simplexml_load_string($xml);
         $new = new static();
-        $new->id = $data['id'];
-        $new->name = $data['name'];
+        $new->id = $data->id;
+        $new->name = $data->name;
         return $new;
     }
 }
@@ -269,6 +271,8 @@ class Product {
 $p1 = Product::fromBasicData(5, 'Widget');
 $p2 = Product::fromJson($some_json_string);
 $p3 = Product::fromXml($some_xml_string);
+
+var_dump($p1, $p2, $p3);
 ]]>
      </programlisting>
     </example>

language/oop5/overloading.xml

@@ -186,8 +186,6 @@ class PropertyTest
 }
 
 
-echo "<pre>\n";
-
 $obj = new PropertyTest;
 
 $obj->a = 1;

language/oop5/paamayim-nekudotayim.xml

@@ -61,6 +61,10 @@ echo MyClass::CONST_VALUE;
   <programlisting role="php">
 <![CDATA[
 <?php
+class MyClass {
+    const CONST_VALUE = 'A constant value';
+}
+
 class OtherClass extends MyClass
 {
     public static $my_static = 'static var';

language/oop5/property-hooks.xml

@@ -220,6 +220,7 @@ class Example
    </simpara>
    <programlisting role="php">
 <![CDATA[
+<?php
 class Example
 {
     public function __construct(
@@ -241,6 +242,7 @@ class Example
    </simpara>
    <programlisting role="php">
 <![CDATA[
+<?php
 class Example
 {
     public private(set) DateTimeInterface $created {

reference/dom/domattr/construct.xml

@@ -52,7 +52,7 @@
 <![CDATA[
 <?php
 
-$dom = new DOMDocument('1.0', 'iso-8859-1');
+$dom = new DOMDocument('1.0', 'utf-8');
 $element = $dom->appendChild(new DOMElement('root'));
 $attr = $element->setAttributeNode(new DOMAttr('attr', 'attrvalue'));
 echo $dom->saveXML(); 
@@ -64,7 +64,7 @@ echo $dom->saveXML();
     <screen>
 <![CDATA[
 <?xml version="1.0" encoding="utf-8"?>
-<root attr="attrvalue" />
+<root attr="attrvalue"/>
 ]]>
     </screen>
    </example>

reference/dom/domdocument/replacechildren.xml

@@ -34,7 +34,7 @@
 $doc = new DOMDocument;
 $doc->loadXML("<container><hello/></container>");
 
-$doc->replaceWith("beautiful", $doc->createElement("world"));
+$doc->replaceChildren("beautiful", $doc->createElement("world"));
 
 echo $doc->saveXML();
 ?>

reference/dom/domdocumentfragment/replacechildren.xml

@@ -36,7 +36,7 @@ $doc->loadXML("<container><hello/></container>");
 $fragment = $doc->createDocumentFragment();
 $fragment->append("hello");
 
-$fragment->replaceWith("beautiful", $doc->createElement("world"));
+$fragment->replaceChildren("beautiful", $doc->createElement("world"));
 
 echo $doc->saveXML($fragment);
 ?>

reference/libxml/functions/libxml-set-streams-context.xml

@@ -94,8 +94,8 @@ $context = stream_context_create($opts);
 libxml_set_streams_context($context);
 
 // request a file through HTTP
-$doc = DOMDocument::load('http://www.example.com/file.xml');
-
+$dom = new DOMDocument;
+$doc = $dom->load('http://www.example.com/file.xml');
 ?>
 ]]>
     </programlisting>

reference/mbstring/functions/mb-convert-case.xml

@@ -116,9 +116,9 @@
 <?php
 $str = "mary had a Little lamb and she loved it so";
 $str = mb_convert_case($str, MB_CASE_UPPER, "UTF-8");
-echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
+echo $str, PHP_EOL;
 $str = mb_convert_case($str, MB_CASE_TITLE, "UTF-8");
-echo $str; // Prints Mary Had A Little Lamb And She Loved It So
+echo $str, PHP_EOL;
 ?>
 ]]>
     </programlisting>
@@ -133,9 +133,9 @@ echo $str; // Prints Mary Had A Little Lamb And She Loved It So
 <?php
 $str = "Τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός";
 $str = mb_convert_case($str, MB_CASE_UPPER, "UTF-8");
-echo $str; // Prints ΤΆΧΙΣΤΗ ΑΛΏΠΗΞ ΒΑΦΉΣ ΨΗΜΈΝΗ ΓΗ, ΔΡΑΣΚΕΛΊΖΕΙ ΥΠΈΡ ΝΩΘΡΟΎ ΚΥΝΌΣ
+echo $str, PHP_EOL;
 $str = mb_convert_case($str, MB_CASE_TITLE, "UTF-8");
-echo $str; // Prints Τάχιστη Αλώπηξ Βαφήσ Ψημένη Γη, Δρασκελίζει Υπέρ Νωθρού Κυνόσ
+echo $str, PHP_EOL;
 ?>
 ]]>
     </programlisting>

reference/mbstring/functions/mb-decode-numericentity.xml

@@ -104,7 +104,7 @@
   <para>
    <example>
     <title><parameter>map</parameter> example</title>
-    <programlisting role="php">
+    <programlisting>
 <![CDATA[
 <?php
 $convmap = array (

reference/mbstring/functions/mb-encode-numericentity.xml

@@ -107,7 +107,7 @@
   <para>
    <example>
     <title><parameter>map</parameter> example</title>
-    <programlisting role="php">
+    <programlisting>
 <![CDATA[
 <?php
 $convmap = array (

reference/pcre/functions/preg-grep.xml

@@ -76,9 +76,12 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-// return all array elements
-// containing floating point numbers
+$array = [ "4", M_PI, "2.74", 42 ];
+
+// return all array elements containing floating point numbers
 $fl_array = preg_grep("/^(\d+)?\.\d+$/", $array);
+
+var_dump($fl_array);
 ?>
 ]]>
     </programlisting>

reference/pcre/functions/preg-match.xml

@@ -316,6 +316,8 @@ if (preg_match("/\bweb\b/i", "PHP is the web scripting language of choice.")) {
     echo "A match was not found.";
 }
 
+echo "\n";
+
 if (preg_match("/\bweb\b/i", "PHP is the website scripting language of choice.")) {
     echo "A match was found.";
 } else {

reference/pcre/functions/preg-replace.xml

@@ -214,6 +214,15 @@ The bear black slow jumps over the lazy dog.
     <programlisting role="php">
 <![CDATA[
 <?php
+$string = 'The quick brown fox jumps over the lazy dog.';
+$patterns = array();
+$patterns[0] = '/quick/';
+$patterns[1] = '/brown/';
+$patterns[2] = '/fox/';
+$replacements = array();
+$replacements[2] = 'bear';
+$replacements[1] = 'black';
+$replacements[0] = 'slow';
 ksort($patterns);
 ksort($replacements);
 echo preg_replace($patterns, $replacements, $string);

reference/simplexml/examples.xml

@@ -243,7 +243,11 @@ bool(false)
     <title>Using XPath</title>
     <simpara>
      SimpleXML includes built-in <acronym>XPath</acronym> support.
-     To find all <literal>&lt;character&gt;</literal> elements:
+     To find all <literal>&lt;character&gt;</literal> elements.
+    </simpara>
+    <simpara>
+     '<literal>//</literal>' serves as a wildcard. To specify absolute
+     paths, omit one of the slashes:
     </simpara>
     <programlisting role="php">
 <![CDATA[
@@ -258,10 +262,6 @@ foreach ($movies->xpath('//character') as $character) {
 ?>
 ]]>
     </programlisting>
-    <simpara>
-     '<literal>//</literal>' serves as a wildcard. To specify absolute
-     paths, omit one of the slashes.
-    </simpara>
     &example.outputs;
     <screen>
 <![CDATA[

reference/simplexml/simplexmlelement/asXML.xml

@@ -119,7 +119,19 @@ echo $xml->asXML();
     <programlisting role="php">
 <![CDATA[
 <?php
-// Continued from example XML above.
+$string = <<<XML
+<a>
+ <b>
+  <c>text</c>
+  <c>stuff</c>
+ </b>
+ <d>
+  <c>code</c>
+ </d>
+</a>
+XML;
+
+$xml = new SimpleXMLElement($string);
 
 /* Search for <a><b><c> */
 $result = $xml->xpath('/a/b/c');

reference/simplexml/simplexmlelement/key.xml

@@ -78,7 +78,12 @@
 <?php
 $xmlElement = new SimpleXMLElement('<books><book>PHP basics</book><book>XML basics</book></books>');
 
-echo var_dump($xmlElement->key());
+try {
+    echo var_dump($xmlElement->key());
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+
 $xmlElement->rewind(); // rewind to the first element
 echo var_dump($xmlElement->key());
 
@@ -88,7 +93,7 @@ echo var_dump($xmlElement->key());
      &example.outputs;
     <screen>
 <![CDATA[
-bool(false)
+Iterator not initialized or already consumed
 string(4) "book"
 ]]>
     </screen>

reference/xml/functions/xml-parse.xml

@@ -108,7 +108,13 @@
 <?php
 $stream = fopen('large.xml', 'r');
 $parser = xml_parser_create();
-// set up the handlers here
+
+xml_set_element_handler(
+    $parser,
+    function($parser, $name, $attributes) { echo $name, PHP_EOL; },
+    function($parser, $name) { echo $name, PHP_EOL; }
+);
+
 while (($data = fread($stream, 16384))) {
     xml_parse($parser, $data); // parse the current chunk
 }