3v4l.org

run code in 300+ PHP versions simultaneously
<?php $random_key = ''; for( $i = 0; $i < 64; $i++) { $random_key .= chr(rand(65, 90)); } print strlen($random_key);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
64
preferences:
119.57 ms | 404 KiB | 173 Q