3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( 0xffffffffffffffff ); var_dump( (int) 0xfffffffffffffb10 );
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
float(1.8446744073709552E+19) int(-2048)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.1, 5.0.3 - 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, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
float(1.844674407371E+19) int(-2048)
Output for 5.0.2
float(1.844674407371E+19) int(9223372036854775807)

preferences:
189.03 ms | 401 KiB | 309 Q