3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (phpversion() != '7.0.0') { die; } $ids = []; for($i=0; $i<100000; $i++) { $userid = bin2hex(random_bytes(6)); $ids[] = hash('sha512', random_bytes(32)); var_dump($ids);die; } $a = array_count_values($ids); asort($a); var_dump( $a[key($a)] );
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.1 - 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
Output for 7.0.0
array(1) { [0]=> string(128) "7928c7cb97e5014636561d260901dd053570853b337507319611aa30738f7aee33df53b52c008a25833894c3a19d759b6aba682d5d69be57cdbd8a6511f767f6" }
preferences:
165.57 ms | 401 KiB | 196 Q