3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function permutation(array $arr) { while($ele=array_shift($arr)) { $x=$ele; echo $x."\n"; foreach($arr as $rest) { $x.=" $rest"; echo $x."\n"; } } } permutation(array("r","o","n","a","l","d","e"));
Output for 5.1.0 - 7.1.0
r r o r o n r o n a r o n a l r o n a l d r o n a l d e o o n o n a o n a l o n a l d o n a l d e n n a n a l n a l d n a l d e a a l a l d a l d e l l d l d e d d e e
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/E9aX9 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/E9aX9 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/E9aX9 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/E9aX9 on line 2
Process exited with code 255.