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  Classes of Sam Stevens  >  MySQL Abstractor  >  Cache.Class.php  >  Download  
File: Cache.Class.php
Role: Auxiliary script
Content type: text/plain
Description: Provides caching support to DBTAL
Class: MySQL Abstractor
MySQL database abstraction layer
Author: By
Last change:
Date: 7 years ago
Size: 1,466 bytes
 

Contents

Class file image Download
<?php 

class Cache
{
    private 
$cacheFile "";
    private 
$settings = array();
    private 
$changed false;
    private 
$disabled false;
    function 
__construct($cacheFile$disable=false)
    {
        if (
$cacheFile != "")
            
$this->cacheFile $cacheFile;
        if (
$disable == true)
            
$this->disabled true;
        else
            
$this->Load();
    }
    private function 
Load()
    {
        
$file = @file($this->cacheFile);
        if (!
is_array($file))
            return 
false;
        foreach(
$file as $key => $line)
        {
            
$line explode(":",$line);
            
$this->settings[$line[0]] = str_replace("&#58;",":",eregi_replace("\n$","",$line[1]));
        }
        return 
true;
    }
    function 
Get($name)
    {
        if (
$this->disabled == true)
            return 
"";
        if (
key_exists($name$this->settings))
            return 
$this->settings[$name];
        else
            return 
false;
    }
    function 
Set($name,$value)
    {
        if (
$this->disabled == true)
            return;
        
$this->settings[$name] = $value;
        
$this->changed true;
    }
    function 
ClearCache()
    {
        if (
$this->disabled == true)
            return;
        
$this->settings = array();
        
$this->Save();
    }
    function 
Save()
    {
        if (
$this->disabled == true)
            return;
        if (
$this->changed == false)
            return; 
//no changes to cache
        
$file fopen($this->cacheFile,"w")
            or die(
"FATAL ERROR: Cannot write to cache file");
        foreach(
$this->settings as $name => $value)
        {
            
fwrite($file,$name.":".str_replace(":","&#58;",$value)."\n");
        }
        
fclose($file);
    }
    
}

?>