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hi, i write a code like this $user_id = $hd_cookie['user_id']; $user_password = $hd_cookie['auth']; $sql = "SELECT * FROM hd_users WHERE user_id='$user_id' AND user_password='$user_password'"; $r_user = mysql_query($sql); $num=mysql_num_rows($r_user); //line 24 it shows Warning Warning: Supplied argument is not a valid MySQL result resource in c:\apache\htdocs\helpdeskfinal\includes\auth.php on line 24 when i print …
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