求助一个PHP比较简单的问题
我想获取数据库受影响的行数 可是$row怎么在实现类这边获取返回影响的行数呢，新手伤不起，这个弯不会转了
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<? <br />
// class_user.php <br />
class UserInfo{ <br />
private $userName; //属性,用户名 <br />
private $passWord; //属性, <br />
private $userGrade; //属性,用户级别<br />
private $row; <br />
private $userInfo; //存储数据库返回信息的数组变量. <br />
<br />
public function __construct($sql){ <br />
require_once("db_config.php"); //包含配置信息. <br />
$result= mysql_query($sql, $conn); // 执行查询语句 <br />
$this->userInfo = mysql_fetch_array($result); //返回查询结果到数组<br />
$row=mysql_num_rows($result); <br />
mysql_query("set names UTF8");<br />
mysql_close($conn); //关闭数据库连接 <br />
$this->getInfo(); //调用传递信息的方法. <br />
} <br />
// 获取信息传递给属性的方法 <br />
private function getInfo(){ <br />
<br />
$this->userName = $this->userInfo["username"]; <br />
$this->passWord = $this->userInfo["password"]; <br />
$this->userGrade = $this->userInfo["userGrade"]; <br />
} <br />
<br />
//返回每个属性的public 方法. <br />
<br />
public function getRow(){ <br />
<br />
return $this->row; <br />
} <br />
public function getUserName(){ <br />
<br />
return $this->userName; <br />
} <br />
<br />
public function getPassword(){ <br />
return $this->passWord; <br />
} <br />
<br />
<br />
public function getUserGrade(){ <br />
return$this->userGrade; <br />
} <br />
<br />
<br />
} <br />
$sql= "select * from userinfo where username='sa' ";<br />
require_once("class_user.php"); <br />
$user= new UserInfo($sql); //创建一个user对象. <br />
//书写sql<br />
$row= $user->getRow(); <br />
$username= $user->getUserName(); //分别调用方法取得数据 <br />
$password= $user->getPassword(); <br />
$usergrade= $user->getUserGrade(); <br />
<br />
echo"your name is ".$username."<br>"; //输出数据 <br />
echo"your password is ".$password."<br>"; <br />
<br />
echo"your grade is ".$usergrade."<br>"; <br />
echo"your ROW is ".$row."<br>"; <br />
?><br />
<br />
