3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $tstart = microtime(true); $numberOfRandoms = 500; $uniques = array(); for($i = 0; $i < $numberOfRandoms; $i++) { do { $code = mt_rand(10000,99999); } while(in_array($code, $uniques); $uniques[] = $code; } $elapsed = microtime(true) - $tstart; echo $elapsed . PHP_EOL; $tstart = microtime(true); $numberOfRandoms = 500; $uniques = array(); do { $uniques[mt_rand(10000, 99999)] = true; } while(count(array_keys($uniques)) < $numberOfRandoms); $uniques = array_keys($uniques); $elapsed = microtime(true) - $tstart; echo $elapsed . PHP_EOL; $tstart = microtime(true); $uniques = range(10000, 99999); shuffle($uniques); $uniques = array_slice($uniques, 0, 500); $elapsed = microtime(true) - $tstart; echo $elapsed . PHP_EOL;
Output for 5.3.0 - 5.4.28
Parse error: syntax error, unexpected ';' in /in/lchIO on line 10
Process exited with code 255.