database.php

<?php
class Database {
		
	private $database;
	
	function __construct() {
		$this->database = $this->getConnection();
	}
	
	function __destruct() {
		$this->database->close();
	}
	
	function exec($query) {
		$this->database->exec($query);
	}
	
	function query($query) {
		$result = $this->database->query($query);
		return $result;
	}
	
	function querySingle($query) {
		$result = $this->database->querySingle($query,true);
		return $result;
	}
	
	function prepare($query) {
		return $this->database->prepare($query);
	}
	
	function escapeString($string) {
		return $this->database->escapeString($string);
	}
	

	function lastInsertRowID() {
		return $this->database->lastInsertRowID();
	}
	
	private function getConnection() {
		$conn = new SQLite3('bill.db');
		return $conn;
	}
}
?>