Hey all. First I want to say that I'm very amateur when it comes to coding. Most of what I know has been self-taught so I don't have any formal education. My coding vocabulary is awful, but generally when I build code I understand what it's doing in laymen terms (ex. it's pulling data from the "users" row in a table and is displaying that data).
Anyway...that's my disclaimer to ask you to be easy on me.
So now to my actual issue. I've built a page where logged in users can share photos with their friends. I successfully built this without any issues. Now I want friends to be able to add comments to the photos. Not so easy. Problem is I have two tables built. One for the sharing of the photos the other for the comments. Here are how the tables are built out:
Photo Table
id | username | initiator | file | gallery | date_time
Comment Table
id | comment | user | file | date_time
Initially I had two queries. Both use a "fetch" array in order to grab and then display specific info in a specific order only for specific users. This was almost working but whichever query came first would only display one result. The query that came after would display all the appropriate results which is what I wanted out of both queries.
On another forum I was told that I needed to "join" or "union" the two queries together. Problem is that when I attempt to do that I get a single dead image, no comments other than the default stuff that is already entered in the PHP code and the error: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given...
Here is the actual query and code:
//WHERE I GATHER COMMENT & PHOTO DATA
$sql = "SELECT comment, user, file, date_time FROM comment
UNION ALL
SELECT DISTINCT initiator, file, gallery FROM photo WHERE username='$log_username' OR initiator='$log_username' ORDER BY date_time DESC";
$query = mysqli_query($db_conx, $sql);
while ($row = mysqli_fetch_array($query, MYSQLI_ASSOC)) {
$c = $row["comment"];
$us = $row["user"];
$pf = $row["file"];
$time = $row["date_time"];
$u = $row["initiator"];
$file = $row["file"];
$gallery = $row["gallery"];
$image = 'user/'.$u.'/'.$file;
}
//WHERE I DISPLAY THE PHOTO DATA
$imagelist .= ' <img height="200"
onclick="this.height=500;"
ondblclick="this.height=200;" src="'.$image.'" alt="'.$u.'" /><br /> Added to <a href="user.php?u='.$u.'"><b>'.$u.''s</b></a> '.$gallery.' gallery<br /><br />
<form action="php_parsers/photocomments_system.php" enctype="multipart/form-data" method="post">
<input type="text" name="comment">
<input type="hidden" name="photo_file" value="'.$file.'">
<input type="submit" class="submit" value=" Submit Comment " />
</form><br /><p style="border-bottom: 1px dotted #A0A0A0;"></p>';
//WHERE I DISPLAY THE PHOTO COMMENTS AND DICTATE WHAT COMMENT SHOWS WITH WHAT PHOTO
if ($pf == $file) {
$imagelist .='<p style="background-color:#E0E0E0;"> <b>'.$us.'</b>: '.$c.' | '.$time.'</p>
<br /><br /><hr/>';
}
For the HTML portion this is where it actually gets displayed:
<div id="page Middle"><?php echo $imagelist; ?></div>
Anyway, I'm assuming there is something wrong with my query and that's why I'm getting the error. Problem is I'm not sure what is wrong with the query. If there is any easier way to do this and I was doing something wrong with the two separate queries that could easily be resolved I can show you how I built that as well.
I would continue on the other forum with the guy that was helping me but he was a little bit too technical for me to understand his suggestions.
Anyway, any help you could give would be GREATLY appreciated.
Thanks! 