3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "PHP " . PHP_VERSION . PHP_EOL; echo "libxml " . LIBXML_DOTTED_VERSION . PHP_EOL . PHP_EOL; $doc = Dom\XMLDocument::createFromString('<root xmlns="urn:a" attr="val"/>'); $doc->documentElement->setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:ns1", "urn:a"); echo "saveXML: " . trim($doc->saveXML()) . PHP_EOL; echo "C14N: " . $doc->C14N() . PHP_EOL;

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.5.30.0220.00817.72

preferences:
53.05 ms | 487 KiB | 5 Q