3v4l.org

run code in 300+ PHP versions simultaneously
<?php function lambda() { $a = "lambda"; return function ($b) { return $a . $b; }; } function closure() { $a = "closure"; return function ($b) use ($a) { return $a . $b; }; } $lambda = lambda(); $closure = closure(); var_dump($lambda(" foo")); var_dump($closure(" foo"));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Warning: Undefined variable $a in /in/aonDS on line 5 string(4) " foo" string(11) "closure foo"
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Notice: Undefined variable: a in /in/aonDS on line 5 string(4) " foo" string(11) "closure foo"
preferences:
169.38 ms | 408 KiB | 5 Q