Example PHP Page; PHP Syntax Highlighting Page

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<?php /** * Define MyClass */ class MyClass{     // Declare a public constructor     public function __construct() { }       // Declare a public method     public function MyPublic() { }       // Declare a protected method     protected function MyProtected() { }       // Declare a private method     private function MyPrivate() { }       // This is public     function Foo(){         $this->MyPublic();         $this->MyProtected();         $this->MyPrivate();     } }   $myclass = new MyClass; $myclass->MyPublic(); // Works $myclass->MyProtected(); // Fatal Error $myclass->MyPrivate(); // Fatal Error $myclass->Foo(); // Public, Protected and Private work   // Valid constant names define("TITLE", "Example"); define("TITLE", "Exa $this_is_a_variable mple");   // Page header include 'header.inc';   echo     '<div>' .         '<form action="/">' .             '<div>' .                 '<label for="q">' .                     'Search the internets' .                     (!empty($_COOKIE['name']) ?                         ' ' . htmlspecialchars($_COOKIE['name']) : ''                     ) .                     '<input id="q" name="q" type="text" value="" />' .                 '</label>' .                 '<input type="submit" value="Go" />' .             '</div>' .         '</form>' .     '</div>' .     '';   // JavaScript include 'javascript.inc';   /** * Lazy load function to prevent regex from being stuffed in * cache. */ protected function _loadRegex() {     $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255     $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})"; // PHP complex variable }