3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo($n) { return $n * 3; } $y = foo(5); $z; // undefined variable w/o error message in PHP // assign absolute value of $y to $z if ($y > 0) $z = $y; else $z = -$y; echo $z;
based on WV3nn
Output for 5.1.0 - 7.1.0
15
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: z in /in/rZTci on line 7 15
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: z in /in/rZTci on line 7 15