一个标准的php操作mysql的封装类

一个php类，封装了php操作mysql的基本方法，包含数据库链接，基本的数据查询方法

<?PHP
	class Database
	{
		var $db;
		var $result;
		var $lastQuery;
		var $numQueries = 0;
		var $error;
		var $showErrors = true;
 
		function Database($host, $user, $password, $dbname)
		{
			$this->db = mysql_connect($host, $user, $password) or die(mysql_error());
			mysql_select_db($dbname, $this->db) or die(mysql_error());
		}
 
		function query($sql)
		{
			$this->error = "";
			$this->lastQuery = $sql;
 
			if($this->showErrors)
				$this->result = mysql_query($sql, $this->db) or die(mysql_error() . "<br/>--<br/>$sql");
			else
				$this->result = mysql_query($sql, $this->db) or ($this->error = mysql_error());
 
			$this->numQueries++;
		}
	}
?>