3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo (int)is_numeric('0,5 месяца');
Output for 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
0
preferences:
79.83 ms | 403 KiB | 67 Q