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run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = [ 'bar', 'baz' ]; var_dump($foo); $new_foo = array_map( function ( $val ) { return $val . 'OHYEAH'; }); var_dump($new_foo);
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> string(3) "bar" [1]=> string(3) "baz" } Warning: array_map() expects at least 2 parameters, 1 given in /in/Ca2R6 on line 9 NULL
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Ca2R6 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 '[' in /in/Ca2R6 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Ca2R6 on line 3
Process exited with code 255.