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run code in 150+ php & hhvm versions
Bugs & Features
<?php $num = (PHP_INT_MAX * 2) + 1; var_dump($num); var_dump(0xffffffffffffffff); echo dechex(PHP_INT_MAX *2 - 1),"\n"; echo dechex(-1);
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
float(1.844674407371E+19) float(1.844674407371E+19) 0 ffffffffffffffff
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/tOhMd on line 2 int(1) float(1.844674407371E+19) Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/tOhMd on line 5 ffffffffffffffff ffffffffffffffff