3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array("lol","lulz","42","\\blub"); array_walk($array, function(&$elm) use($array) { $elm = str_replace('\\', '\\\\', $elm); //var_dump($array); }); $value = json_encode($array); var_dump($value);
Output for 5.3.7 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(30) "["lol","lulz","42","\\\\blub"]"
Output for 5.3.6
string(127) "{"46220888":"1\u0000\u0000","46220488":"1\u0000\u0000\u0000","46212712":"1\u0000","46212800":"1\u0000\u0000\u0000\u0000\u0000"}"
Output for 5.3.0 - 5.3.5
string(28) "["lol","lulz","42","\\blub"]"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/XEl1e 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/XEl1e on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/XEl1e on line 3
Process exited with code 255.