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I started a new thread encase other people are having the same problem, makes it easier to find in a search

Im getting this error:

Warning: mysql_result() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\user_system\core\inc\user.inc.php on line 7

Code:

user.inc.php
[syntax=php]<?php

// Checks if the given username exists in the database.
function user_exists($user){
$user = mysql_real_escape_string($user);
$total = mysql_query("SELECT COUNT ('user_id') FROM 'users' WHERE 'user_name' = '{$user}' ");
return (mysql_result($total, 0) == '1') ? true : false;
}

// Checks is the given username and password combination is valid.
function valid_credentials($user, $pass){
$user = mysql_real_escape_string($user);
$pass = sha1($pass);
$total = mysql_query("SELECT COUNT ('user_id') FROM 'users' WHERE 'user_name' = '{$user}' AND 'user_password' = '{$pass}' ");
return (mysql_result($total, 0) == '1') ? true : false;
}

// Adds a user to the database.
function add_user($user, $pass){
$user = mysql_real_escape_string(htmlentities($user));
$pass = sha1($pass);
mysql_query("INSERT INTO 'users' ('user_name', 'user_password') VALUES ('{$user}', '{$pass}') ");
}

?>[/syntax]

register.php:
[syntax=php]<?php

include('core/init.inc.php');

if (isset($_POST['username'], $_POST['password'], $_POST['repeat_password']))
{
if (empty($_POST['username']))
{
$errors[] = 'The username cannot be empty.';
}
if (empty($_POST['password']) || empty($_POST['repeat_password']))
{
$errors[] = 'The password cannot be empty.';
}
if ($_POST['password'] !== $_POST['repeat_password'])
{
$errors[] = 'Password verfication failed.';
}
if (user_exists($_POST['username']))
{
$errors[] = 'The username you enetered is already taken.';
}
if (empty($errors) == false)
{
add_user($_POST['username'], $_POST['password']);
$_SESSION['username'] = htmlentities($_POST['username']);
header('Location: protected.php');
die();
}
}

?>[/syntax]

Any ideas? I tried a google, but my level of understanding is not great enough yet to work out what's going on.

This applies for every query you have.

Around table names and field names, you use backticks ( ` ) rather than quotes ( ' ).

So you need to switch that around.

Tino wrote:Around table names and field names, you use backticks ( ` ) rather than quotes ( ' ).

That is the cause of the error ^^

And just to add a tip, when ever you get this kind of error it's a good idea to try adding

[syntax=php]echo mysql_error();[/syntax]
after the query giving the error as this will get you a bit more info on the problem.

Hi there, this doesn't seem to be the case I have used ' on all my table and field names, it actually took me a while to find the ` on my keyboard lol

So its not that, I have added echo mysql_error(); to the end of each mysql statement but it doesn't show anything different ? Still:

Warning: mysql_result() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\user_system\core\inc\user.inc.php on line 7

Whenever I try and submit anything on the register page.

here...try this and tell me if it works:
[syntax=php]
<?php

//checks if given username exists in the database.
function user_exists($user){
$user = mysql_real_escape_string($user);

$total = mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `user_name` = '{$user}'");

return (mysql_result($total, 0) == '1') ? true : false;
}
[/syntax]
Copy and replace in you page...

Hi there, I did that but now get this:

Fatal error: Cannot redeclare user_exists() (previously declared in C:\xampp\htdocs\user_system\core\inc\user.inc.php:4) in C:\xampp\htdocs\user_system\core\inc\user.inc.php on line 27

oops sorry Tino I miss read your post lol I will change them over now

Hi Tino changed it to this:

[syntax=php]<?php

// Checks if the given username exists in the database.
function user_exists($user){
$user = mysql_real_escape_string($user);
$total = mysql_query("SELECT COUNT (`user_id`) FROM `users` WHERE `user_name` = '{$user}' ");
return (mysql_result($total, 0) == '1') ? true : false; echo mysql_error();

}

// Checks is the given username and password combination is valid.
function valid_credentials($user, $pass){
$user = mysql_real_escape_string($user);
$pass = sha1($pass);
$total = mysql_query("SELECT COUNT (`user_id`) FROM `users` WHERE `user_name`= '{$user}' AND `user_password` = '{$pass}' ");
return (mysql_result($total, 0) == '1') ? true : false; echo mysql_error();

}

// Adds a user to the database.
function add_user($user, $pass){
$user = mysql_real_escape_string(htmlentities($user));
$pass = sha1($pass);
mysql_query("INSERT INTO `users` (`user_name`, `user_password`) VALUES ('{$user}', '{$pass}') "); echo mysql_error();

}

?>[/syntax]

But still getting this when trying to submit:

Warning: mysql_result() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\user_system\core\inc\user.inc.php on line 7

ok kalipsso I tried your text again, I have no idea why it looks exactly the same as mine word for word (see my copy and paste below) but I no longer get that error message but nothing is sent to the database? The form resets and the page reloads but nothing is showing in the db?

ok I got it!

I put:

$total = mysql_query("SELECT COUNT (`user_id`)

and it should be:

$total = mysql_query("SELECT COUNT(`user_id`)

Who would have thought a space after COUNT could cause all that

Now time to see why its not writing to my DB

Out of interest if I have entered my DB details incorrectly would I receive an error? As of now I'm not getting anything just the page resets.

Sorry guys i was very tired last night lol I added some code to my register page that I have no idea why that was stopping it, all is good now!

twiggy wrote:all is good now!

good news