Replace Static image with DB image PHP - php

Question

I have a div of 40 images(nopreview.png), What I am trying to do is to replace the nopreview.png with the images from db, so if I have 10 images in DB, so out of 40 nopreview.png will be replaced with images from DB keeping the 30 nopreview.png as it is.
HTML
<div class="holder">
<img src="nopreview.png"/>
<img src="nopreview.png"/>
</div>
PHP
$uid="XXXXX";
$check = "SELECT rqid FROM users WHERE fbid = $uid LIMIT 0,250";
$rs = mysqli_query($con,$check);
if(mysqli_num_rows($rs)>0):
while($row = mysqli_fetch_assoc($rs)):
$reqid= $row['rqid'];
$requests = explode(',',$reqid);
foreach(array_unique($requests) as $request_id) {
echo $request_id."<br>";
echo"<img src='https://graph.facebook.com/$request_id/picture?width=78&height=78' />";
echo "<hr>";
}
endwhile;
endif;
Stuck in where to put the images div?

Answer 1

You're trying to work with PHP like Javascript.
Javascript is for DOM manipulation.
PHP is embedded into HTML, and creates HTML (most of the time).
Sccrap your HTML file. Your file "images.php" will look sth like:
<div class="holder">
<?php
$uid="XXXXX";
$check = "SELECT rqid FROM users WHERE fbid = $uid LIMIT 0,250";
$rs = mysqli_query($con,$check);
$imagecount=0;
while($row = mysqli_fetch_assoc($rs)) {
$reqid= $row['rqid'];
$requests = explode(',',$reqid);
foreach(array_unique($requests) as $request_id) {
echo"<img src='https://graph.facebook.com/$request_id/picture?width=78&height=78' />";
$imagecount++;
}
}
for(;$imagecount<40;$imagecount++) {
echo("<img src=\"nopreview.png\" />");
}
?>
</div>
So you will always have your 40 images, starting with the available ones and filling at the end with nopreview.png if required.