3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = str_split('This is a string!'); $i = 0; var_dump(array_map(function($val, $key) { return ($key % 2 ? $val : null); }, $string);
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '$string' (T_VARIABLE) in /in/LVHMj on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/LVHMj on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/LVHMj on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/LVHMj on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/LVHMj on line 5
Process exited with code 255.
preferences:
210.23 ms | 1395 KiB | 122 Q