PHP class to calculate execution time

This article mainly introduces the classes used to calculate execution time in PHP. It analyzes the class examples and related usage techniques of PHP calculation and operation implementation. It is of great practical value. Friends in need can refer to it

The example in this article describes the PHP class used to calculate execution time. The details are as follows:

With this php class, calculating the execution time of a function or a piece of code 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;
  }
 }
};
?>

Usage examples are as follows:

<?php
  $timer = new c_Timer;
  $timer->start();
  echo "<hr>";
  $timer->stop();
  echo $timer->elapsed();
?>

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

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