html - Username and Password trouble in PHP -


i trying create login form php cannot login. incorrect password/username instead. have triple checked credentials in database , correct. please help

here code

<!doctype html> <html> <head> <meta charset="utf-8"> <title>login</title> <link rel="stylesheet" href="css/style.css" /> </head> <body> <?php      require('db.php');      session_start();      // if form submitted, insert values database.      if (isset($_post['username'])){          $username = $_post['username'];          $password = $_post['password'];          $username = stripslashes($username);          $username = mysqli_real_escape_string($connection,$username);          $password = stripslashes($password);          $password = mysqli_real_escape_string($connection,$password);          //checking user existing in database or not          $query = "select * `backuser` username='".$username."' , password='".md5($password)."'";          $result = $connection->query($query) or die(mysqli_error());          $rows = mysqli_num_rows($result);          if($rows==0){              $_session['username'] = $username;              header("location: index.php"); // redirect user index.php          }else{              echo " <div class='form'><h3>username/password incorrect.</h3><br/>click here <a href='login.php'>login</a></div>";          }      }else{ ?> <div class="form"> <h1>log in</h1> <form action="" method="post" name="login"> <input type="text" name="username" placeholder="username" required /> <input type="password" name="password" placeholder="password" required /> <input name="submit" type="submit" value="login" /> </form> </div> <?php } ?> </body> </html>

you have error in logic. change if($rows==0) if($rows!=0). if user in db, should have @ least 1 record returned , mysqli_num_rows() should return number >= 1.


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