3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dom = new DOMDocument(); $dom->loadXml('<foo xmlns="urn:foo"/>'); var_dump($dom->documentElement->lookupNamespaceUri(NULL)); var_dump($dom->documentElement->lookupNamespaceUri('' || NULL));
Output for git.master, git.master_jit, rfc.property-hooks
string(7) "urn:foo" NULL

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page


preferences:
35.23 ms | 401 KiB | 8 Q