3v4l.org

run code in 500+ PHP versions simultaneously
<?php $three = +-+3; // -3 $three = -+-3; // 3 $four = -+-+4; // 4 $four = -+-+4; // 4 var_dump(+0 === -0); var_dump((int) '+-+3'); var_dump(is_numeric('+-+3'));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.5.70.0100.00816.94
8.5.60.0100.00716.91
8.5.50.0080.01116.76
8.5.30.0070.00716.90
preferences:
50.06 ms | 492 KiB | 5 Q