封装，mysql类

无详细内容 MySQL ?php class Mysql {private $host;private $user;private $pwd;private $dbName;private $charset;private $conn = null;public function __construct() {$this-host = 'localhost';$this-user = 'root';$this-pwd = 'root';$this-dbName =

host = 'localhost';
		$this->user = 'root';
		$this->pwd = 'root';
		$this->dbName = 'test';

		$this->connect($this->host,$this->user,$this->pwd);

		$this->switchDb($this->dbName);

		$this->setChar($this->charset);
	}

	//负责链接
	private function connect($h,$u,$p) {
		$conn = mysql_connect($h,$u,$p);
		$this->conn = $conn;
	}

	//负责切换数据库
	public function switchDb($db) {
		$sql = 'use' . $db;
		$this->query($sql);
	}

	//负责设置字符集
	public function setChar($char) {
		$sql = 'set names' . $char;
		$this->query($sql);
	}

	//负责发送sql查询
	public function query($sql) {
		return mysql_query($sql,$this->conn);
	}

	//负责获取多行多列的select结果
	public function getAll($sql) {
		$list = array();

		$rs = $this->query($sql);
		if (!$rs) {
			return false;
		}

		while ($row = mysql_fetch_assoc($rs)) {
			$list[] = $row;
		}

		return $list;
	}

	public function getRow($sql) {
		$rs = $this->query($sql);

		if(!$rs) {
			return false;
		}

		return mysql_fetch_assoc($rs);
	}

	public function getOne($sql) {
		$rs = $this->query($sql);
		if (!$rs) {
			return false;
		}
		return mysql_fetch_assoc($rs);

		return $row[0];
	}

	public function close() {
		mysql_close($this->conn);
	}
}

echo '
';
$mysql = new Mysql();
print_r($mysql);

$sql = "insert into stu values (4,'wangwu','99998')";

if($mysql->query($sql)){
	echo "query成功";
}else {
	echo "失败";
}

echo "
";

$sql = "select * from stu";
$arr = $mysql->getAll($sql);

print_r($arr);
?>