3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $sum = null; // global variable $sum2 = null; // global variable function outer() { global $sum; global $sum2; $hundred_more = 100; $sum = function ($a, $b) use (&$hundred_more) { return $a + $b + (++$hundred_more); }; $sum2 = function ($a, $b) use (&$hundred_more) { return $a + $b + (++$hundred_more); }; var_dump($hundred_more); } outer(); // define sum at the global scope and print 100 var_dump($sum(5, 10)); // 116 var_dump($sum(5, 10)); // 116 var_dump($sum2(5, 10)); // 116 var_dump($sum2(5, 10)); // 116 outer(); // redefine sum at the global scope and print 100 var_dump($sum(5, 10)); // 116 var_dump($sum(5, 10)); // 116 var_dump($sum2(5, 10)); // 116 var_dump($sum2(5, 10)); // 116
based on RuLgU
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
int(100) int(116) int(117) int(118) int(119) int(100) int(116) int(117) int(118) int(119)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/vtVMM on line 10
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 T_FUNCTION in /in/vtVMM on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/vtVMM on line 10
Process exited with code 255.