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run code in 200+ php & hhvm versions
Bugs & Features
<?php $map = [ 'center' => 1, 'left' => 2, 'right' => 3 ]; if (array_key_exists($map[$align]) && isset($map[$align])) { print_r("true"); } else { print_r("false"); }
based on Z2NK3
Output for 5.4.0 - 7.2.0
Notice: Undefined variable: align in /in/Qsdqc on line 8 Notice: Undefined index: in /in/Qsdqc on line 8 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/Qsdqc on line 8 false
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Qsdqc 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/Qsdqc on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Qsdqc on line 3
Process exited with code 255.