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@ 2019-03-17T20:04:24Z

<?php

$start = microtime(true);

switch (pcntl_fork()) {
    case -1:
            die('problem');
            break;
            
    case 0:
            $a = 234325;
            for ($i = 0; $i < 1000000; ++$i) {
                // wasting CPU
                $a *= $i;
            }
            break;
    
    default:
        pcntl_wait();
        echo "the child took " . (microtime(true) - $start) . " micro seconds";
}

Output
Performance
VLD
References
Branches

microtime: documentation ( source)

preferences:dark modelive preview

36.16 ms | 402 KiB | 5 Q