3v4l.org

run code in 300+ PHP versions simultaneously
<?php $bits = 64; $N = 0xfffffffffffffffe; var_dump( -(pow(2, $bits) - $N ); // -2
Output for 5.3.0 - 5.3.26, 5.4.0 - 5.4.16
Parse error: syntax error, unexpected ';' in /in/vvGom on line 4
Process exited with code 255.
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177.24 ms | 1395 KiB | 51 Q