profiller.php

   1 <?php
   2 class Profiller{
   3        //enforce singleton
   4     protected $time_log=array();
   5     protected $last_time=0;
   6     final private function __clone() {}
   7     final private function __construct() {
   8     }
   9
  10     final private static function getInstance()
  11     {
  12         static $instance = null;
  13
  14         if (null === $instance) {
  15             $instance = new self();
  16         }
  17         return $instance;
  18     }
  19     public function show(){
  20        $inst=self::getInstance();
  21        echo "<table>\n<tr><th>Message</th><th>Time</th></tr>\n";
  22        foreach($inst->time_log as $log){
  23           echo "<tr><td>{$log[message]}</td><td>{$log[time]}</td></tr>\n";
  24        }
  25        echo "</table>\n";
  26     }
  27     public function speed($message){
  28       $curr_time=microtime();
  29       $inst=self::getInstance();
  30       $last_time=($inst->last_time>0)?$inst->last_time:$curr_time;
  31       $ellapsed=$curr_time-$last_time;
  32       $inst->time_log[]=array("time"=>$ellapsed,"message"=>$message);
  33       $inst->last_time=microtime();
  34     }
  35
  36 }
  37 ?>