[php] klasa do db

mam błąd

Fatal error: Class 'mysqli' not found in db.class.php on line 11

a to obecny kod

<?php

class database {
	
	var $connection;
	
	/* Creates a connection with the database.
		@param string: database name
	*/
	function database ($name) {
		$this->connection = new mysqli('localhost',$name,'root','');
		
		if (mysql_connect_errno()) {
			echo '<p class="error">Error: Connection with database ' . $name . ' failed.</p>';
		}
	}
	
	
	/* Executes queries.
		@param string: sql query
	*/
	function execute($sql) {
		$result = $this->connection->query($sql);
		
		return $result;
		// $zmienna = $db->execute("SELECT ...");
		// pozniej pobieram $wynik = $zmienna->fetch_object();
	}
	
	
	
	/* Disconnnects with the database.
	*/
	function disconnect() {
		$this->connection->close();
	}
	
	
}


	$db = new database('comicsite');
	//$db->execute("SELECT * FROM cms_users");
	$db->disconnect();




?>

co robie zle?

No jak to co? :D
Nie masz sterownika mysqli zainstalowanego ;-)

dzieki