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run code in 300+ PHP versions simultaneously
<?php class AliasPool { protected static $i = 0; public static function get () { $alias = ''; $j = self::$i; $done = false; while (!$done) { if ($j < 26) { $done = true; } $alias = chr(($j % 26) + ord('a')) . $alias; $j = floor($j / 26); } self::$i++; return $alias; } } for ($i = 0; $i < 60; ++$i) { var_dump(AliasPool::get()); print "\n"; }

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39.42 ms | 402 KiB | 5 Q