3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "Our array:\n"; $arr = [ 1, 2, 3 ]; var_dump($arr); echo "First unshift\n"; echo "\n", array_unshift($arr, 0); var_dump($arr); echo "Shift\n"; echo "\n", array_shift($arr); var_dump($arr);
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Our array: array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } First unshift 4array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [3]=> int(3) } Shift 0array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Ul19L on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/Ul19L on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Ul19L on line 4
Process exited with code 255.