3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "abc_def_ghi_jkl"; $str = preg_replace_callback("/(?:^|_)([a-z])/", $str, function($matches) { return strtoupper($matches[1]); }); echo $str;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, function "abc_def_ghi_jkl" not found or invalid function name in /in/7IeX2:4 Stack trace: #0 /in/7IeX2(4): preg_replace_callback('/(?:^|_)([a-z])...', 'abc_def_ghi_jkl', Object(Closure)) #1 {main} thrown in /in/7IeX2 on line 4
Process exited with code 255.

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:
34.84 ms | 401 KiB | 8 Q