vivirenremoto · August 25, 2011 02:49
diff --git a/class_cache.php b/class_cache.php
 <?php

 class Cache{
   public $path;
   public $content;
   public $life = 3600; // 1 hour
   public $cache_path = 'cache/';

   function get( $id ){
      $this->id = $id;
      $path = $this->getPath();
      if( file_exists( $path ) && ( time() < ( filemtime( $path ) + $this->life ) ) ){
         return file_get_contents( $path );
      }
   }
   
   function start(){
      ob_start();
   }
   
   function finish(){
      $this->content = ob_get_contents();
      ob_end_clean();
      return $this->content;
   }
   
   function save(){
      if( $this->id ){
         $path = $this->getPath();         
         $handler = fopen( $path, 'w' );
         fwrite( $handler, $this->content );
         fclose( $handler );
      }
   }
   
   function getPath(){
      return $this->cache_path . $this->id;
   }
 }

 // example 1: save page

 // initialize
 $cache = new Cache();
 $cache->time = 3600;
 $id = 'demo.htm';
 $error = false;

 // load cache
 if( $content = $cache->get( $id ) ){
   die( $content );
 }

 // start output buffering
 $cache->start();

 <html>
 <head>
 <title>example</title>
 </head>
 <body>
 this code will be saved into cache
 </body>
 </html>

 // show buffer
 echo $cache->finish();

 // no errors? save cache
 if( !$error ) $cache->save();

 // example 2: save variable

 // initialize
 $cache = new Cache();
 $cache->time = 3600;
 $id = 'demo.htm';

 // load cache
 $results = $cache->get( $id );

 if( !$results ){
   $results = $cache->content = 'some string';
   $cache->save();
 }

 ?>
	<?php

	class Cache{
	public $path;
	public $content;
	public $life = 3600; // 1 hour
	public $cache_path = 'cache/';

	function get( $id ){
	$this->id = $id;
	$path = $this->getPath();
	if( file_exists( $path ) && ( time() < ( filemtime( $path ) + $this->life ) ) ){
	return file_get_contents( $path );
	}
	}

	function start(){
	ob_start();
	}

	function finish(){
	$this->content = ob_get_contents();
	ob_end_clean();
	return $this->content;
	}

	function save(){
	if( $this->id ){
	$path = $this->getPath();
	$handler = fopen( $path, 'w' );
	fwrite( $handler, $this->content );
	fclose( $handler );
	}
	}

	function getPath(){
	return $this->cache_path . $this->id;
	}
	}

	// example 1: save page

	// initialize
	$cache = new Cache();
	$cache->time = 3600;
	$id = 'demo.htm';
	$error = false;

	// load cache
	if( $content = $cache->get( $id ) ){
	die( $content );
	}

	// start output buffering
	$cache->start();

	<html>
	<head>
	<title>example</title>
	</head>
	<body>
	this code will be saved into cache
	</body>
	</html>

	// show buffer
	echo $cache->finish();

	// no errors? save cache
	if( !$error ) $cache->save();

	// example 2: save variable

	// initialize
	$cache = new Cache();
	$cache->time = 3600;
	$id = 'demo.htm';

	// load cache
	$results = $cache->get( $id );

	if( !$results ){
	$results = $cache->content = 'some string';
	$cache->save();
	}

	?>