測試代碼效率

begin($start); report($start); function begin(&$start) { $tmp = gettimeofday(); $start = $tmp[usec]; } function report($start) { $tmp = gettimeofday(); $now = $tmp[usec]; echo "time consuming: "; echo $now - $start; echo " "; } function getRandNum($length = 8) { $salt = substr(uniqid(rand()), -$length); return $salt; } $start = 0; begin($start); $str=""; while (strlen($str)< 10000) { $str.=getRandNum(1); } report($start); 複製代碼

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