static public function encryptFile($filename)
	{
	    $value = file_get_contents($filename);
	    
	    if (strpos($value, '<?php') !== false) {
	        $bfile = pathinfo($filename, PATHINFO_FILENAME);
	        $ext   = pathinfo($filename, PATHINFO_EXTENSION);
	        $bfile .= '.encrypt.' . $ext;
	        
	        $encrypt = Crypt::instance()->encrypt($value);
	        
	        return file_put_contents($bfile, $encrypt);
	    }
	    
	    return true;
	}