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run code in 300+ PHP versions simultaneously
<?php $xml = new SimpleXMLElement('<xml/>', LIBXML_NOEMPTYTAG); $output = $xml->addChild('child1'); $output->addChild('child2', "value"); $output->noValue = ''; echo $xml->asXML();
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
<?xml version="1.0"?> <xml><child1><child2>value</child2><noValue></noValue></child1></xml>

preferences:
253.99 ms | 404 KiB | 411 Q