Querying info from one table based on info in another

Posted on 16th Feb 2014 07:03 pm by admin

Hi, I am currently trying to make a part for my user driven website where one user can subscribe to another and whoever they have subscribed to is echoed back on there profile page.

my users table structure is: id username password and my subscription table is: id user_id follow_id

i am currently trying to query the logged in users subscriptions with this sql_query

$subsQuery = mysql_query("SELECT U.username FROM users AS U INNER JOIN subscription AS Sub.follow_id=U.id WHERE Sub.user_id=".$ID); $ID being the logged in users id.

However when trying to echo this on the page using this bit of php:

<? while ($subs = mysql_fetch_assoc($subsQuery)) { ?><br /><br />
<? echo $subs['username'] ?>

<? } ?>

it throws back this error:

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/avince/public_html/users/user.php on line 53

Any help would be much appreciated!

Your Answer:

Login to answer

Other forums

Buggy registration system
Hey, I just started scripting in PHP, and I ran into a few problems.
Code: <?php
includ

modifying query string with no page refresh
Hi everybody,
I've tried to get info about my problem all over the internet but i didn't find out

EU VAT Package 2010
Does any one know whether SAP will be developing new reporting functionality due the new VAT rules t

present value of sequence?
Hi

Please help me to find out the present value of sequence?

Thanks

Splitting Attributes
SQL> SELECT I_NAME, substr(I_NAME,1,instr(I_NAME,'O')) "First part",

substr(I_NAME, IN

Comparing MySql data and arrays.
I have a mysql table set up like this:
idsubjectbodyuseriddatetimetags1blog subjectblog body111|2

Mass activity scheduling
Hi experts,

Im facing some problems to deal with mass activity jobs.
When I run some

quick question about System Change Number(SCN) in FlashBack Query topic
i know tht we can get the SCN of the database using flashback concept as follows

SQL>

image upload script not working with png
The basic process of this php code is to take the submitted file, convert it to a small JPG thumbnai

How to show the difference between two data field in a database with php.
Hello php gurus,

how r u all... i'm not so well facing a typical problem please help me...<