Member Avatar for ronaldpaul 
<?php
	//Start session
	session_start();
	
	//Include database connection details
	require_once('config.php');
	
	//Array to store validation errors
	$errmsg_arr = array();
	
	//Validation error flag
	$errflag = false;
	
	//Connect to mysql server
	$link = mysql_connect('localhost','root','');
	if(!$link) {
		die('Failed to connect to server: ' . mysql_error());
	}
	
	//Select database
	$db = mysql_select_db(shop);
	if(!$db) {
		die("Unable to select database");
	}
	
	//Function to sanitize values received from the form. Prevents SQL injection
	function clean($str) {
		$str = @trim($str);
		if(get_magic_quotes_gpc()) {
			$str = stripslashes($str);
		}
		return mysql_real_escape_string($str);
	}
	
	//Sanitize the POST values
	$login = $_POST['login'];
	$password = $_POST['password'];
	
	//Input Validations
	if($login == '') {
		$errmsg_arr[] = 'Login ID missing';
		$errflag = true;
	}
	if($password == '') {
		$errmsg_arr[] = 'Password missing';
		$errflag = true;
	}
	
	//If there are input validations, redirect back to the login form
	if($errflag) {
		$_SESSION['ERRMSG_ARR'] = $errmsg_arr;
		session_write_close();
		header("location: login-form.php");
		exit();
	}
	
	//Create query
	$qry="SELECT * FROM employee WHERE username='$login' AND passwd='".md5($_POST['password'])."'";
	$result=mysql_query($qry);
	
	//Check whether the query was successful or not
	if($result) {
		if(mysql_num_rows($result) == 1) {
			//Login Successful
			session_regenerate_id();
			$member = mysql_fetch_assoc($result);
			$_SESSION['SESS_MEMBER_ID'] = $member['member_id'];
			$_SESSION['SESS_FIRST_NAME'] = $member['firstname'];
			$_SESSION['SESS_LAST_NAME'] = $member['lastname'];
			session_write_close();
			header("location: navigator.html");
			exit();
		}else {
			//Login failed
			header("location: login-failed.php");
			exit();
		}
	}else {
		die("Query failed");
	}
?>

In the above php code the password check is not working. In my table i have the columns username and passwd ant in my form i have the textbox name as username and password. Session are not a problem. But the password check is not working. Below i've pasted my form code. Kindly help me with this problem as soon as possible.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Login Form</title>
<link href="loginmodule.css" rel="stylesheet" type="text/css" />
</head>
<body>
<p>&nbsp;</p>
<form id="loginForm" name="loginForm" method="post" action="login-exec.php">
  <table width="300" border="0" align="center" cellpadding="2" cellspacing="0">
    <tr>
      <td width="112"><b>Login</b></td>
      <td width="188"><input name="login" type="text" class="textfield"/></td>
    </tr>
    <tr>
      <td><b>Password</b></td>
      <td><input name="password" type="password" class="textfield"/></td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><input type="submit" name="Submit" value="Login" /></td>
    </tr>
  </table>
</form>
</body>
</html>
  • 4 Contributors
  • 5 Replies
  • 230 Views
  • 1 Day Discussion Span
  • Latest Post Latest Post by cwarn23

Recommended Answers

All 5 Replies

Member Avatar for kireol

is the query failing?

is the # of rows returned not == 1?

have you tried echoing the sql and running it in a sql client to see what happens?


also, "my code doesnt work" is hard to debug. Try to be more specific.

Member Avatar for cwarn23

Try replacing line 59 with the following.

$result=mysql_query($qry) or die(mysql_error());
Member Avatar for ronaldpaul

Everything is fine without the use of md5. But if i put md5 to encrypt the password its not working. While registering also i'm putting md5 and for login also i'm using md5. But i don't know why its not working when i use md5. Pls reply me as soon as possible. Thanks :-)

Member Avatar for Wraithmanilian

Have you tried a debug?

Example, set the value of the password in the database in a variable called $dbpw, then create a variable by using $userpw = md5($_POST['password'];

Then echo the two to the screen from a test script. See if they are the same first.

Edited by mike_2000_17 because: Fixed formatting
Member Avatar for cwarn23

Try making this line 58 and 59

$qry='SELECT * FROM employee WHERE username="'.mysql_real_escape_string($login).'" AND passwd="'.mysql_real_escape_string(md5($_POST['password'])).'"';
$result=mysql_query($qry) or die(mysql_error());

I have added some debugging functions which should help resolve the error.

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