Application of PHP to obtain script running time_PHP tutorial

header("content-type:text/html;charset=utf-8");

//microtime—Returns the current Unix timestamp and microseconds

　$oldtime = microtime(true);

echo "The running time of this script is:";

　$v=0;

　for ($i = 0; $i < 100; $i++) {

　$v++;

　}

　$newtime =microtime(true);

//Get the time difference

$runtime = $newtime-$oldtime;

//Convert the timestamp into a string - var_export outputs or returns the string representation of a variable

$runtime=var_export($runtime);

//Intercept the string substr_count to calculate the number of occurrences of the string

　$postion = substr_count($runtime, 'E');

　$runtime = substr($runtime,0,$postion-1);

//Convert string value to floatfloatval — Get the floating point value of the variable

　$runtime = floatval($runtime)/1000;

echo $runtime."seconds";

　?>

http://www.bkjia.com/PHPjc/814669.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/814669.htmlTechArticleheader(content-type:text/html;charset=utf-8); //microtime returns the current Unix time Stamp and number of microseconds $oldtime = microtime(true); echo The time this script runs is:; $v=0; for ($i = 0;...