Online PHP editor | rfc 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 git.master, git.master_jit, rfc.property-hooks: 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.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
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2015-08-27 Callable Prototypes - declined
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2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
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