3v4l.org

run code in 500+ PHP versions simultaneously
<?php namespace A; $t1 = hrtime(true); for ($i = 0; $i < 6000000; $i++) { count([]); } $t2 = hrtime(true); $t3 = hrtime(true); for ($i = 0; $i < 6000000; $i++) { \count([]); } $t4 = hrtime(true); echo "Without import: " . (($t2 - $t1) / 1000000) . " ms\n"; echo "With import : " . (($t4 - $t3) / 1000000) . " ms\n";

preferences:
95.3 ms | 1479 KiB | 5 Q