PHP a page Execution time class code _php tips

Core code

<?php class 
timer//page execution time class 
{ 
var starttime;//page start execution time 
var stoptime;//page End Execution Time 
var spendtime ;//page execution takes time 
function getmicrotime ()//Gets the floating-point number 
{ 
list (usec,sec) =explode ("", Microtime ()) 
that returns the current microseconds. Return ((float) usec + (float) sec); 
The function start ()//page begins executing functions, returning the Start page execution time 
{ 
this->starttime=this->getmicrotime (); 
} 
function display ()//Displays the time of the page execution 
{ 
this->stoptime=this->getmicrotime (); 
this->spendtime=this->stoptime-this->starttime; 
Return round (this->spendtime,10); 
} 
/* Call method 
timer=new timer (); 
Timer->start (); 
/* Place the script you want to execute or code for 
(i=0;i<100000;i++) 
{ 
echo i; 
echo "<br>"; 
} 
* * * 
//echo "<p> takes time to execute this code." Timer->display (). " Seconds "; 
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PHP detects every piece of code execution time

<?php
//instance 1

/**
 * @start time
 /
function Prostarttime () {
  global $startTime;
  $mtime 1 = Explode ("", Microtime ());
  $startTime = $mtime 1[1] + $mtime 1[0];
}

/**
 * @End time
/function Proendtime () {
  global $startTime, $set;
  $mtime 2 = Explode ("", Microtime ());
  $endtime = $mtime 2[1] + $mtime 2[0];
  $totaltime = ($endtime-$startTime);
  $totaltime = Number_format ($totaltime, 7);
  echo "<br/>process time:". $totaltime;
}

Prostarttime () When the program call begins to be recorded
;

Sleep (1);   Sleep () Delay code executes several seconds
proendtime ();//The Execution time of the program is consumed in each paragraph
(2);
Proendtime ();
Sleep (3);
Proendtime (); 


/************************************************* Gorgeous split line **************************************************/

Instance 2

$t 1 = microtime (true);
Sleep (3);
$t 2 = Microtime (true);
Echo ' Program time consuming '. Round ($t 2-$t 1,3). ' Seconds ';

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