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run code in 150+ php & hhvm versions
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<?php function process($c, $d = 25) { global $e; $retval = $c + $d - $_GET['c'] - $e; return $retval; } $e = 10; echo process(5); ?>
Output for 5.3.0 - 5.6.22, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: c in /in/aWChf on line 5 20
Output for 4.3.0 - 5.2.17
Notice: Undefined index: c in /in/aWChf on line 5 20