3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo pow(2,53)-1; echo "\n",PHP_INT_MAX,"\n"; var_dump(PHP_INT_MAX + (PHP_INT_MAX/2) );
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
9007199254740991 9223372036854775807 float(1.3835058055282E+19)
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
9007199254740991 PHP_INT_MAX int(0)