我从我的SQL获取数据它给人的错误这里是我的代码Mysql的提取错误,而正从MySQL数据库的数据
<?php
$con = mysql_connect("productivo.db.6420177.hostedresource.com","","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("productivo", $con);
$username=$_POST['UserName'];
$password=$_POST['UserPassword'];
echo($u);
echo($pw);
$query = "SELECT * from UserCredentials WHERE UserName='$username' AND UserPassword='$password'";
// $ CON =请求mysql_query($查询,$ CON); // $ cnt = mysql_num_rows($ con);
$res = mysql_query($query,$con);
$cnt = mysql_num_rows($res);
echo($cnt);
if($cnt ==0) { echo "Login Failed"; } else { echo "Yes Successful Login" ; } ?>
这里警告它显示
警告:mysql_num_rows():提供的参数不是一个有效的MySQL结果资源在/ home /内容/ I/H/U/ihus235/HTML/CS/pah_brd_v1/productivo/CheckUserCredentialsAPI.php第21行 登录失败
可以accees使用这个网址
http://celeritas-solutions.com/pah_brd_v1/productivo/CheckUserCredentialsAPI.html
[''MySQL'](http://php.net/manual/en/book.mysql.php)(_mysql _ * _ functions)扩展名是[*** deprecated ***](http:// php达网络/手动/ EN/function.mysql-connect.php)。我建议使用['MySQLi'](http://php.net/manual/en/book.mysqli.php)(_mysqli _ * _ functions)或['PDO'](http://php.net/manual改为/en/book.pdo.php)。 – BlitZ 2013-04-30 05:40:39