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run code in 200+ php & hhvm versions
Bugs & Features
<?php $bits = 64; $N = 0xffffffffffffffff; var_dump($N); //var_dump( -( pow(2, $bits) - $N ) ); // -2
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
float(1.844674407371E+19)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/mrfSX on line 5
Process exited with code 255.