< Neo22s />

define("APP_ACTIVE",true);//false disabled, true enabled the cache
define("APP_DATA_FILE",SITE_ROOT."/APP/application.data");//where we keep the cache, needs to be writeble
define("APP_EXPIRE",86400);//in seconds, when the cache expire, false is never deleted by time

////////////////////////////////////////////////////////////
function APP_start (){//load variables from the file
	if (APP_ACTIVE){
	    global $_APP;
	    if (file_exists(APP_DATA_FILE)){ // if data file exists, load the cached variables
	        $file = fopen(APP_DATA_FILE, "r");// read data file
	        if ($file){
	            $data = fread($file, filesize(APP_DATA_FILE));
	            fclose($file);
	        }
	        // build application variables from data file
	        $_APP = unserialize($data);
	    }
	    else  fopen(APP_DATA_FILE, "w");//if the file does not exist we create it
 
	    if (APP_DATA_FILE!=false){//if it's false we don't delete
		   //erase the APP every X minutes before loading next time
		    $app_time=filemtime(APP_DATA_FILE)+APP_EXPIRE;
		    if (time()>$app_time) unlink (APP_DATA_FILE);//erase the APP
	    }
	}   
}
////////////////////////////////////////////////////////////
function APP_write(){//writes into the cache file
	if (APP_ACTIVE){
	    global $_APP;
	    $data = serialize($_APP); // write application data to file
	    $file = fopen(APP_DATA_FILE, "w");
	    if ($file){
	        fwrite($file, $data);
	        fclose($file);
	    }
	}
}

APP_start();//starting values from the cache

$_APP["var_name"]=$anyVariable
APP_write(); //we need to wirte every time we change values

$anyVariable=$_APP["var_name"];