Online PHP editor | output for fgFa2

@ 2015-09-30T15:33:40Z

<?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";

Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: string(6) "object" bool(false) bool(true) bool(false) int(0) Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/fgFa2:22 Stack trace: #0 {main} thrown in /in/fgFa2 on line 22
Process exited with code 255.
Output for 8.0.0 - 8.0.9: string(6) "object" bool(false) bool(true) bool(false) int(0) Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/fgFa2:22 Stack trace: #0 {main} thrown in /in/fgFa2 on line 22
Process exited with code 255.
Output for 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: string(6) "object" bool(false) bool(true) bool(false) int(0) int(0) Warning: SimpleXMLElement::count(): Node no longer exists in /in/fgFa2 on line 23 int(0) ---------------------- string(6) "object" bool(true) bool(false) bool(false) int(1) int(0) int(0) ----------------------
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.6: string(6) "object" bool(true) bool(false) bool(false) int(0) int(0) Warning: SimpleXMLElement::count(): Node no longer exists in /in/fgFa2 on line 23 int(0) ---------------------- string(6) "object" bool(true) bool(false) bool(false) int(1) int(0) int(0) ----------------------

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