MySQL error, PLEASE HELP!!!

[techiefreak05]

Hi, this code:
[code]<?php
$db_host = "localhost";
$db_user = "zyco";
$db_pwd = "****";
$db_name = "zyco_zycologin";
mysql_connect($db_host, $db_user, $db_pwd);
mysql_select_db($db_name);
?>
<center>
<?php
$query = mysql_query("SELECT * FROM messages WHERE to = '".$_SESSION['username']."' AND read = 'no'");
while ($array = mysql_fetch_array($query)) {
echo "Message: ".$array['message'];
}
?>[/code]

produces this result:

[tt]Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/zyco/public_html/newlayout/readMessages.php on line 49[/tt]

wahts wrong????

[GingerRobot]

Add an or die statement:
$query = mysql_query("SELECT * FROM messages WHERE to = '".$_SESSION['username']."' AND read = 'no'") or die(mysql_error());

[techiefreak05]

!!! uh oh, I did that, and got this:

[tt]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'to = 'llamaherder728' AND read = 'no'' at line 1[/tt]

*llamaherder728 is the name of the current username that is trying to retrieve the MySQL Data

[techiefreak05]

Heres my MySQL version:

[tt]MySQL Version: 4.1.19-standard[/tt]

[GingerRobot]

So llamaherder728 is your mysql username? If so there must be a clash in variables somewhere in your script. However, you said you were using the variable $db_user.

Try taking out the variables for the connection and putting them straight into the mysql_connect function:
mysql_connect('localhost', 'username','password');
mysql_select_db('dbname');

[techiefreak05]

no no no llamaherder728 is the user in my site.. it is NOT the MySQL username, connecting to the DB is fine....

[techiefreak05]

Can anyone see the error?? I have no idea why it wont work!

[GingerRobot]

Me neither. Umm, try doing the same query in phpMyAdmin, but obviously replace ".$_SESSION['username']." with llamaherder728

[techiefreak05]

no, $_SESSION[username] echo'd to llamaherder728. because thats the user that im logged in as in my site. it HAS to be $_SESSION[username] so ALL my users can read their messages..

[redarrow]

post you current code for god sake man?

[techiefreak05]

[code]<?php
$db_host = "localhost";
$db_user = "zyco";
$db_pwd = "****";
$db_name = "zyco_zycologin";
mysql_connect($db_host, $db_user, $db_pwd);
mysql_select_db($db_name);
?>
<center>
<?php
$query = mysql_query("SELECT * FROM messages WHERE to = '.$_SESSION[username].' AND read = 'no'");
while ($array = mysql_fetch_array($query)){
echo "Message: ".$array['message'];
echo "From: ".$array['from'];
}
?>[/code]

produces this result:

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/zyco/public_html/newlayout/readMessages.php on line 49

[redarrow]

try this and show the outcome cheers.

[code]
<?php session_start();

$db_host = "localhost";
$db_user = "zyco";
$db_pwd = "****";
$db_name = "zyco_zycologin";
mysql_connect($db_host, $db_user, $db_pwd);
mysql_select_db($db_name);
?>
<center>
<?php
$query = mysql_query("SELECT * FROM messages WHERE to = '.$_SESSION[username].' AND read = 'no'");
echo $query;
while ($array = mysql_fetch_assoc($query)){
echo "Message: ".$array['message'];
echo "From: ".$array['from'];
}
?>
[/code]

[tomfmason]

the only thing that I can think of is try this for the database connection. Also I would create a database connection file like db.php with this in it. So all that you have to do is include it at the top of your script.

[code]
<?php  
$dbhost = 'yourhost';
$dbusername = 'username';
$dbpasswd = 'password';
$database_name = 'yourdb';

$connection = mysql_pconnect("$dbhost","$dbusername","$dbpasswd")  
   or die ("Couldn't connect to server.");
$db = mysql_select_db("$database_name", $connection)
   or die("Couldn't select database.");
?>[/code]

Give this a try.

Good Luck,
Tom

[GingerRobot]

Leave the or die statement on the end of the query, it means you can always see whats going on.

Two things, firstly, if you leave out the single quotes around the session variable then you dont need to use the .s e.g:

$query = mysql_query("SELECT * FROM messages WHERE to = '$_SESSION[username]' AND read = 'no'") or die(mysql_error();

And second, i realise that you need to use the session to get this working properly, i was merely suggesting that you try a sample query in phpMyAdmin to establish wether or not it is a problem with the table, the query or your php code.

[techiefreak05]

[code]<?php
$query = mysql_query("SELECT * FROM messages WHERE to = '.$_SESSION[username].' AND read = 'no'");
echo $query;
while ($array = mysql_fetch_assoc($query)){
echo "Message: ".$array['message'];
echo "From: ".$array['from'];
}
?>[/code]

i needed to turn THAT into THIS:

[code]<?php
$query = mysql_query("SELECT * FROM messages WHERE `to` = '.$_SESSION[username].' AND `status` = 'no'");
echo $query;
while ($array = mysql_fetch_assoc($query)){
echo "Message: ".$array['message'];
echo "From: ".$array['from'];
}
?>[/code]

it seems tow rok.. it doesnt produce any erros.. so hold on, ill check it

[redarrow]

mysql_fetch_assoc i new it lol..................

[techiefreak05]

I got it, it works! thanks everyone!

[techiefreak05]

well, i wanted to expand something.. whats wrong with this:??

echo "From: <a href=.$array['from'].html>$array['from']</a >";

i want to link to the person who its from, cuz every users has a HTML page.

[tomfmason]

change
[code=php:0]echo "From: <a href=.$array['from'].html>$array['from']</a >";[/code]


to
[code=php:0]echo "From: <a href=" . $array['from'] . "html>" . $array['from'] . "</a >";[/code]