Always same result... Login failure

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January 2nd, 2013, 11:52 AM

southwind84

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Join Date: Jan 2013

Posts: 1

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Always same result... Login failure

Hope someone can help me....
First of all sorry for my bad english!
I'm trying to write an php code for a user login.
When I run the code i always get the same result:"Login failure".
Even if thes "user" and "password" that i tiped in exists or not.
I used xampp 3.1.0, databasename: login, tablename: login.
Think about it for days but can't find any solution, please can someone help me? what i do wrong?

Here is the code:

<html>
<head >
<body>

<form action='login.php?login=yes' method=POST>
Username:<input type=text name='user' /><br />
Password: <input type=password name='pass' /> <br />
<input type=submit value='Go!' />
</form>

<?php

$user=isset($_POST['user']);
$pass=isset($_POST['pass']);
$login=isset($_GET['login']);

if($login=='yes')
{
$con=mysql_connect('localhost','root','root') or die("Cant connect host");
mysql_select_db('login') or die("Cant connect database");

$get=mysql_query("SELECT count(id) FROM login WHERE (user='$user' AND pass='$pass')") or die ("Error on mysql_querry");
$result=mysql_result($get,0);

if($result!=1) echo "Login failure!";
else {
echo "Login sucess!";
$_SESSION['user']=$user;
}

}
?>

</head>
</body>
</html>

January 4th, 2013, 10:23 AM

Jyncka

We're trapped inside a game!

Join Date: Jul 2008

Location: Maryland

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You have some syntax problems in your code. Please use code tags to format it in your post so everyone can read it more easily.

The error I see is this

Quote:

user='$user' AND pass='$pass'

The single quotes tell PHP to interpret those variables as strings. You are querying for rows where user has a value of "$user" and password has a value of "$pass". Try removing the single quotes.

Finally, this seems like it should be moved to the PHP board since it's a coding error.

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January 4th, 2013, 11:10 AM

r937

SQL Consultant

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Location: Toronto Canada

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Quote:

Originally Posted by Jyncka

The single quotes tell PHP to interpret those variables as strings.

actually, those single quotes are for mysql, not for php, but yes, they delimit strings

if you remove them, you will have an sql statement that says

Code:

WHERE (user=fred AND pass=sesame)

and at that point, mysql interprets fred and sesame as column names, resulting in an error

the only time the quotes are not required is when the columns are numeric and the values are numbers

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Always same result... Login failure

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