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run code in 300+ PHP versions simultaneously
<?php $dom = new DOMDocument(); $root = $dom->createElement('html'); $dom->appendChild($root); $el1 = $dom->createElement('p1'); $el1->setAttribute('id', 'foo'); $el1->setIdAttribute('id', true); $root->appendChild($el1); $el2 = $dom->createElement('p2'); $el2->setAttribute('id', 'foo'); $el2->setIdAttribute('id', true); $root->appendChild($el2); unset($el1, $el2); $root->removeChild($dom->getElementById('foo')); var_dump($dom->getElementById('foo'));
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.26, 7.4.0 - 7.4.13, 8.0.0 - 8.0.2
NULL