- var_dump: documentation ( source)
- class_exists: documentation ( source)
<?php
/**
* The only reliable way of determining if a child exists
* in SimpleXMLElement is to use count(). All other methods
* do not work reliably in global or local NS.
*
* NOTE: Error suppresion on @count() is used to suppress
* "PHP Warning: count(): Node no longer exists"
*/
if(!class_exists('SimpleXMLElement')) die("Bonkers");
$xml = new SimpleXMLElement('
<xml xmlns:abstract="urn:my.org:abstract">
<abstract:node>foo</abstract:node>
<bar>123</bar>
</xml>
');
var_dump(gettype($xml->node));
var_dump(isset($xml->node));
var_dump(empty($xml->node));
var_dump(is_null($xml->node));
var_dump(($xml->node->count()));
var_dump(@count($xml->node->children()));
var_dump($xml->node->children()->count());
echo "----------------------\n";
var_dump(gettype($xml->bar));
var_dump(isset($xml->bar));
var_dump(empty($xml->bar));
var_dump(is_null($xml->bar));
var_dump(($xml->bar->count()));
var_dump(@count($xml->bar->children()));
var_dump($xml->bar->children()->count());
echo "----------------------\n";