3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo(is_numeric('1')); ?>
Output for 5.6.0 - 5.6.26, 7.0.0 - 7.0.4, 7.0.6 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
1
Output for 7.0.5

Process exited with code 137.
preferences:
140.78 ms | 401 KiB | 190 Q