3v4l.org

run code in 300+ PHP versions simultaneously
<?php function microtime_float() { list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } $time_start = microtime_float(); var_dump($time); $time_end = microtime_float(); $time = $time_end - $time_start; echo "Did nothing in $time seconds\n";

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29.27 ms | 402 KiB | 5 Q