3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'This is a string!'; $i = 0; array_map(str_split($string), function($val, $key) { return ($key % 2 ? $val : null); }));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.31
Parse error: syntax error, unexpected ')' in /in/a4G8m 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 in /in/a4G8m 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 in /in/a4G8m on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/a4G8m on line 5
Process exited with code 255.
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222.02 ms | 1395 KiB | 122 Q