3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function uuid($c = 4) { $x = function($c) { for ($n = ''; strlen($n) < $c + 1; $n = $n.mt_rand()); return substr($n, -$c); }; return sprintf( '%s-%04d-%04d-%04d-%04d%04d', microtime(), $x($c), $x($c), $x($c), $x($c), $x($c), $x($c) ); } $time = microtime(); $uuids = array(); for ($i = 0; $i < 10000; $i++) { $uuids[] = uuid(); } if (count(array_unique($uuids)) != count($uuids)) { echo 'DUPLICATE'; } else { echo 'No duplicate'; }
based on PEQ2g
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
No duplicate
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/GiNEm on line 4
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/GiNEm on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GiNEm on line 4
Process exited with code 255.