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run code in 150+ php & hhvm versions
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<?php function f($code){ return 'pa' === strtolower(substr($code, 0, 2)); } var_dump([ 'pa05' => f('pa05'), 'pa08' => f('pa08'), 'c10' => f('c10'), 'test' => f('test'), ]);
based on fVTIH
Output for 5.4.0 - 7.1.0
array(4) { ["pa05"]=> bool(true) ["pa08"]=> bool(true) ["c10"]=> bool(false) ["test"]=> bool(false) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/bhK1S on line 7
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 '[', expecting ')' in /in/bhK1S on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/bhK1S on line 7
Process exited with code 255.