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run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = str_split('This is a string!'); $i = 0; var_dump(implode('', array_map(function($val, $key) { return $key % 2 ? $val : null; }, $string, array_keys($string))));
based on c3lHJ
Output for 5.3.0 - 7.1.0
string(8) "hsi tig"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/Bpef7 on line 6
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, expecting ')' in /in/Bpef7 on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/Bpef7 on line 6
Process exited with code 255.