PHP implements class instances to compute execution Time _php tips

The examples in this article describe the classes that the PHP implementation uses to compute execution times. Share to everyone for your reference. Specifically as follows:

With this PHP class, the calculation function or a piece of code execution time is simple

<?php
class C_timer {
var $t _start = 0;
var $t _stop = 0;
var $t _elapsed = 0;
function Start () {
$this->t_start = Microtime ();
}
function Stop () {
$this->t_stop = Microtime ();
}
function elapsed () {
if ($this->t_elapsed) {return
   $this->t_elapsed;
} else {
   $start _u = substr ($this->t_start,0,10); 
   $start _s = substr ($this->t_start,11,10);
   $stop _u = substr ($this->t_stop,0,10);  
   $stop _s = substr ($this->t_stop,11,10);
   $start _total = doubleval ($start _u) + $start _s;
   $stop _total = doubleval ($stop _u) + $stop _s;
   $this->t_elapsed = $stop _total-$start _total;
   Return $this->t_elapsed;}}
;
? >

Examples of usage are as follows:

<?php
  $timer = new C_timer;
  $timer->start ();
  echo " 
 

I hope this article will help you with your PHP program design.