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run code in 300+ PHP versions simultaneously
<?php mt_srand(42); for ($i = 0; $i < 20; $i++) { $key = generate_key(64); $len = strlen($key); echo "{$key} {$len}\n"; } function generate_key($n) { $k = ceil($n*0.75); $key = base64_urlencode(rand_buffer($k)); if (strlen($key) > $n) { $key = substr($key, 0, $n); } return $key; } function base64_urlencode($buf) { return str_replace( array('+', '/', '='), array('-', '_', ''), base64_encode($buf) ); } function rand_buffer($n) { if (function_exists("openssl_random_pseudo_bytes")) { return openssl_random_pseudo_bytes($n); } $buf = ""; for ($i = 0; $i < $n; $i++) { $buf .= chr(mt_rand(0, 255)); } return $buf; }

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26.32 ms | 402 KiB | 5 Q