3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = ['asd' => 23, 'asddd' => 1, 'as' => 22, 'asdddsas' => 0]; var_dump($arr); asort($arr); var_dump($arr); $key = array_shift(array_keys($arr)); var_dump($key);
based on Gao0a
Output for 7.0.0 - 7.1.0
array(4) { ["asd"]=> int(23) ["asddd"]=> int(1) ["as"]=> int(22) ["asdddsas"]=> int(0) } array(4) { ["asdddsas"]=> int(0) ["asddd"]=> int(1) ["as"]=> int(22) ["asd"]=> int(23) } Notice: Only variables should be passed by reference in /in/oeZAF on line 6 string(8) "asdddsas"
Output for 5.4.0 - 5.6.28
array(4) { ["asd"]=> int(23) ["asddd"]=> int(1) ["as"]=> int(22) ["asdddsas"]=> int(0) } array(4) { ["asdddsas"]=> int(0) ["asddd"]=> int(1) ["as"]=> int(22) ["asd"]=> int(23) } Strict Standards: Only variables should be passed by reference in /in/oeZAF on line 6 string(8) "asdddsas"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/oeZAF on line 2
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/oeZAF on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/oeZAF on line 2
Process exited with code 255.