3v4l.org

run code in 300+ PHP versions simultaneously
<?php mt_srand(0); echo '0: ' . mt_rand() / mt_getrandmax() . PHP_EOL; mt_srand(4); echo '4: ' . mt_rand() / mt_getrandmax() . PHP_EOL;
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
0: 0.54881350255982 4: 0.96702983880743
preferences:
77.09 ms | 402 KiB | 68 Q