3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('precision', 20); var_dump(0b1111111111111111111111111111111111111111111111111111111111111111); var_dump(bindec('0b1111111111111111111111111111111111111111111111111111111111111111'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
float(1.844674407370955E+19) float(1.8446744073709552E+19)
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(18446744073709549568) float(18446744073709551616)
preferences:
128.9 ms | 408 KiB | 5 Q