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

extract data
Code: <div class="post hentry uncustomized-post-template">

how can i expire the submitted page using session.
hi,
i'm new to php world.
i'm using "post" method.
when i submit it,data goes to

Adding Different Numbers From MySQL
Basically I have a mysql database with a couple prices as the following:

9.99
9.99
9.99

what does this mean? +=
is anyone able to explain what this code is saying?

i had it written for me awhile back and n

What am I missing here? Help!
Hello all!. I can't seem to get this working right. Well - it renders right, but something is goin

trim function issues
Hi guys, total noob here...

So I've been tinkering around with a html and am using php to em

javascript in php code causes page to display white
Hi All,

Odd one this, I've got the following code (below) which is a simple log in form. The

User feedback after MySQL query has been executed
Hi all, I've just registered on PHPFreaks because I've got a question that I simply can't work out b

Forum tutorial
Im a beginner in PHP. Im making a forum(previous questbook, counter and few others) to learn. For no

Read from forum
Haven't written anything forever and I would like to get back.
What I'm trying to do is getting t