combining two codes targeting images - php

Question

I have two working codes that do two things to the images in my word-press site. However they don't work when I use them both as is. I can't seem to combine them and keep the functionality of both.
Outputs all the images in my word-press post with the last one wrapped in #last-img
<?php
preg_match_all('/(<img [^>]*>)/', get_the_content(), $images);
for( $i=0; isset($images[1]) && $i < count($images[1]); $i++ ) {
if ($i == end(array_keys($images[1]))) {
echo sprintf('<div id="last-img">%s</div>', $images[1][$i]);
continue;
}
echo $images[1][$i];
}
?>
puts the last image as the background of #last-img
<?php
preg_match_all('/src="([^"]*)"/i', get_the_content(), $images);
?>
<div id="last-img" style="background:url(<?php echo $images[1][count($images[1])-1] )"> ... </div>
I want to display all the images and have the last image as the background of #last-img

Answer 1

You can do it like below:-
<?php
preg_match_all('/(<img [^>]*>)/', get_the_content(), $images);
preg_match_all('/src="([^"]*)"/i', get_the_content(), $images1);
$count = count($images[1]);
$count1 = count($images1[1]);
foreach($images[1] as $k=> $img){
if($k == $count-1){
$format = '<div id="last-img" style="background:url(%s)"> ... </div>'; // Or $format = "<div id='last-img' style='background:url(%s)'> ... </div>";
$image = $images1[1][$count1-1];
echo sprintf($format,$image);
}else{
echo $img;
}
}
?>
Or
<?php
preg_match_all('/(<img [^>]*>)/', get_the_content(), $images);
preg_match_all('/src="([^"]*)"/i', get_the_content(), $images1);
$count = count($images[1]);
$count1 = count($images1[1]);
foreach($images[1] as $k=> $img){
echo $img;
}
$format = '<div id="last-img" style="background:url(%s)"> ... </div>'; // Or $format = "<div id='last-img' style='background:url(%s)'> ... </div>";
$image = $images1[1][$count1-1];
echo sprintf($format,$image);
?>