3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo base_convert( "ffffffffffff", 16, 10 );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.26, 8.1.0 - 8.1.13, 8.2rc1 - rc3
281474976710655

preferences:
17.02 ms | 409 KiB | 5 Q