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run code in 300+ PHP versions simultaneously
<?php function generateRandomString($length = 22) { return substr(str_shuffle(str_repeat($x = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', ceil($length / strlen($x)))), 1, $length); } $generated = []; for ($i = 0; $i < 1000; $i++) { $generated[] = generateRandomString(); } var_dump(count(array_unique($generated)));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
int(1000)
preferences:
132.7 ms | 402 KiB | 157 Q