3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "Unsigned and Signed:\n"; $offset = abs(~0xffffffff) + 2 + 4294967295; printf("%f\n",PHP_INT_MAX * 2 - 1); printf("%d\n",~$offset);
Output for 5.2.1 - 7.1.0
Unsigned and Signed: 18446744073709551616.000000 -8589934594
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.2.0
Unsigned and Signed: 18446744073709552000.000000 -8589934594
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Unsigned and Signed: Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/nWA4i on line 6 -1.000000 -8589934594