move a string to a different location

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I am displaying an external page on my website with file_get_contents() so i have no control over the text. But i need to move a string to a different location  in the page.

I have tried with preg_replace but it's not working. I think it's because the distance between the wildcard delimiter is too long.

 

After moving the string, i also need to add <img> tags around it

 

My page looks like this :

 

(lots of html code here)
<input type="hidden" name="product" value="20842421" />
(lots of html code here)
<div class="articleSize">
(lots of html code here)
<input type="hidden" name="product" value="20842422" />
(lots of html code here)
<div class="articleSize">
(lots of html code here)

 

The result i am expecting would be :

 

(lots of html code here)
<input type="hidden" name="product" value="20842421" />
(lots of html code here)
<img src="20842421.gif">
<div class="articleSize">
(lots of html code here)
<input type="hidden" name="product" value="20842422" />
(lots of html code here)
<img src="20842422.gif">
<div class="articleSize">
(lots of html code here)

 

I have over 60 different different matches to move on this page

 

Any help would be appreciated