3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ns = "uri:nowhere"; $dom = new DOMDocument(); $dom->loadXML("<root xmlns:ns3456789012345678901234567890123='{$ns}'></root>"); // 33 $dom->firstChild->appendChild($dom->createElementNS($ns, "child")); echo $dom->saveXML();
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
<?xml version="1.0"?> <root xmlns:ns3456789012345678901234567890123="uri:nowhere"><ns3456789012345678901234567890123:child/></root>
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <?xml version="1.0"?> <root xmlns:ns3456789012345678901234567890123="uri:nowhere"><ns3456789012345678901234567890123:child/></root>

preferences:
238.8 ms | 402 KiB | 290 Q