3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r([ 'substr without length' => substr('Hello World', 1), 'substr with null length' => substr('Hello World', 1, null), 'mb_substr without length' => mb_substr('Hello World', 1), 'mb_substr with null length' => mb_substr('Hello World', 1, null), ]);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [substr without length] => ello World [substr with null length] => ello World [mb_substr without length] => ello World [mb_substr with null length] => ello World )

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:
62.34 ms | 401 KiB | 8 Q