3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * Generate a random string, using a cryptographically secure * pseudorandom number generator (random_int) * * For PHP 7, random_int is a PHP core function * For PHP 5.x, depends on https://github.com/paragonie/random_compat * * @param int $length How many characters do we want? * @param string $keyspace A string of all possible characters * to select from * @return string */ function random_str( int $length = 64, string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' ): string { if ($length < 1) { throw new \RangeException("Length must be a positive integer"); } $pieces = []; $max = mb_strlen($keyspace, '8bit') - 1; for ($i = 0; $i < $length; ++$i) { $pieces []= $keyspace[random_int(0, $max)]; } return implode('', $pieces); } $a = random_str(32); $b = random_str(8, 'abcdefghijklmnopqrstuvwxyz'); $c = random_str(); var_dump($a, $b, $c);
Output for git.master
string(32) "uhzaLfLrL1wd9VyMqdF6nXQzjxiJivV4" string(8) "hrfvtzpl" string(64) "zDvaXBCRpoiEQFsNQJrT9UgCoviBw5oP65ATluOtAY7ZJRSFuGdCxhfOJ6kVQJPR"
Output for git.master_jit
string(32) "kE6U97jfLiwxurl1R4byDXKXd41hkcw2" string(8) "bgelwhfj" string(64) "4UX795oFuelJ1FVSMJrD7nxAnOlf0kkDJ5njSRoDFcMDGyHHNXv8IpsVYIi8vdJs"
Output for rfc.property-hooks
string(32) "9p6IXfoLKTVuluB8TEfw5JzWVW1HrWyO" string(8) "ygbykusl" string(64) "G1rdMpmbkNekk6wzgeXUcyC0ZlQnqaQaV8vOBVxYyRbmFOM3FckcogArmvAa8gU6"

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page


preferences:
101.37 ms | 408 KiB | 5 Q