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Editing: wp_automatic_JSLikeHTMLElement.php

<?php
/**
* JavaScript-like HTML DOM Element
*
* This class extends PHP's DOMElement to allow
* users to get and set the innerHTML property of
* HTML elements in the same way it's done in 
* JavaScript.
*
* Example usage:
* @code
* require_once 'wp_automatic_JSLikeHTMLElement.php';
* header('Content-Type: text/plain');
* $doc = new DOMDocument();
* $doc->registerNodeClass('DOMElement', 'wp_automatic_JSLikeHTMLElement');
* $doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
* $elem = $doc->getElementsByTagName('div')->item(0);
* 
* // print innerHTML
*   echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
*   echo "\n\n";
* 
* // set innerHTML
* $elem->innerHTML = '<a href="http://fivefilters.org">FiveFilters.org</a>';
*   echo $elem->innerHTML; // prints '<a href="http://fivefilters.org">FiveFilters.org</a>'
*   echo "\n\n";
* 
* // print document (with our changes)
*   echo $doc->saveXML();
* @endcode
*
* @author Keyvan Minoukadeh - http://www.keyvan.net - keyvan@keyvan.net
* @see http://fivefilters.org (the project this was written for)
*/
class wp_automatic_JSLikeHTMLElement extends DOMElement
{
	/**
	* Used for setting innerHTML like it's done in JavaScript:
	* @code
	* $div->innerHTML = '<h2>Chapter 2</h2><p>The story begins...</p>';
	* @endcode
	*/
	public function __set($name, $value) {
		if ($name == 'innerHTML') {
			// first, empty the element
			for ($x=$this->childNodes->length-1; $x>=0; $x--) {
				$this->removeChild($this->childNodes->item($x));
			}
			// $value holds our new inner HTML
			if ($value != '') {
				$f = $this->ownerDocument->createDocumentFragment();
				// appendXML() expects well-formed markup (XHTML)
				$result = @$f->appendXML($value); // @ to suppress PHP warnings
				if ($result) {
					if ($f->hasChildNodes()) $this->appendChild($f);
				} else {
					// $value is probably ill-formed
					$f = new DOMDocument();
					$value = mb_convert_encoding($value, 'HTML-ENTITIES', 'UTF-8');
					// Using <htmlfragment> will generate a warning, but so will bad HTML
					// (and by this point, bad HTML is what we've got).
					// We use it (and suppress the warning) because an HTML fragment will 
					// be wrapped around <html><body> tags which we don't really want to keep.
					// Note: despite the warning, if loadHTML succeeds it will return true.
					$result = @$f->loadHTML('<htmlfragment>'.$value.'</htmlfragment>');
					if ($result) {
						$import = $f->getElementsByTagName('htmlfragment')->item(0);
						foreach ($import->childNodes as $child) {
							$importedNode = $this->ownerDocument->importNode($child, true);
							$this->appendChild($importedNode);
						}
					} else {
						// oh well, we tried, we really did. :(
						// this element is now empty
					}
				}
			}
		} else {
			$trace = debug_backtrace();
			trigger_error('Undefined property via __set(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
		}
	}

/**
	* Used for getting innerHTML like it's done in JavaScript:
	* @code
	* $string = $div->innerHTML;
	* @endcode
	*/	
	public function __get($name)
	{
		if ($name == 'innerHTML') {
			$inner = '';
			foreach ($this->childNodes as $child) {
				$inner .= $this->ownerDocument->saveXML($child);
			}
			return $inner;
		}

$trace = debug_backtrace();
		trigger_error('Undefined property via __get(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
		return null;
	}

public function __toString()
	{
		return '['.$this->tagName.']';
	}
}