3v4l.org

run code in 300+ PHP versions simultaneously
<?php switch(PHP_INT_SIZE) { case 4:echo '32-bit version of PHP';break; case 8:echo '64-bit version of PHP';break; default:echo 'PHP_INT_SIZE is ' . PHP_INT_SIZE;break; }
Output for 4.4.0 - 4.4.9, 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
64-bit version of PHP
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Notice: Use of undefined constant PHP_INT_SIZE - assumed 'PHP_INT_SIZE' in /in/iu0DN on line 3 Notice: Use of undefined constant PHP_INT_SIZE - assumed 'PHP_INT_SIZE' in /in/iu0DN on line 6 PHP_INT_SIZE is PHP_INT_SIZE
preferences:
184.56 ms | 402 KiB | 342 Q