3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array('a', 'b', 'c', 'd', 'e', 'f'); $str = implode('', array_walk(array_reverse($arr), function(&$v,$k){if($k%3==0)$v.=';';})); echo $str;
based on VVLNj
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/66gtD on line 3 Warning: implode(): Invalid arguments passed in /in/66gtD on line 3
Output for 5.3.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/66gtD on line 3 Warning: implode(): Invalid arguments passed in /in/66gtD on line 3
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/66gtD on line 3
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 T_FUNCTION in /in/66gtD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/66gtD on line 3
Process exited with code 255.