3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo pow(2,53)-1; echo "\n",PHP_INT_MAX,"\n"; var_dump(dechex(PHP_INT_MAX +1));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
9007199254740991 9223372036854775807 Fatal error: Uncaught TypeError: dechex(): Argument #1 ($num) must be of type int, float given in /in/l0mj9:7 Stack trace: #0 /in/l0mj9(7): dechex(9.2233720368548E+18) #1 {main} thrown in /in/l0mj9 on line 7
Process exited with code 255.
Output for 4.4.0 - 4.4.9, 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, 5.5.0 - 5.5.36, 5.6.0 - 5.6.22, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
9007199254740991 9223372036854775807 string(16) "8000000000000000"
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
9007199254740991 Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/l0mj9 on line 5 PHP_INT_MAX Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/l0mj9 on line 7 string(1) "1"

preferences:
241.57 ms | 402 KiB | 393 Q