3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(1,2,3); function byvalue($arg) { $arr[0] = 10; } byvalue($arg); var_dump($arr); // no change call_user_func_array('byvalue', array(&$arg)); var_dump($arr); // no change
based on KHB3m
Output for 5.0.4 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: arg in /in/1LZmF on line 6 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/1LZmF on line 9
Process exited with code 255.
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: arg in /in/1LZmF on line 6 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }