Parse opengraph image tag problem

[Semnomic]

<form action="form.php" method="get">
<label>Redbubble Design url:
<input style height="20" width="40" type="numeric" name="url" size="35" />
</label>
<p></p>
<label>Design Short Desc:
<input style height="20" width="40" type="numeric" name="desc" size="35"/>
</label>
<p></p>
<label>Product Hashtags:
<input style height="20" width="40" type="numeric" name="tags" size="35"/>
</label>
<p></p>
<input type="submit">
</form>
<p></p>
<?php
parse_str($_SERVER['QUERY_STRING']);
echo $url;?>



<?php
$page_content = file_get_contents('$url');
$dom_obj = new DOMDocument();
$dom_obj->loadHTML($page_content);
$meta_val = null;

foreach($dom_obj->getElementsByTagName('meta') as $meta) {

if($meta->getAttribute('property')=='og:image'){ 

    $meta_val = $meta->getAttribute('content');
}
}
echo $meta_val;

?>

First time posting here so i hope i got it right.

 

im making a small program that parses OG image from a url.

 

The above code works if I replace $url in the main php section of code with the actual url > https://www.redbubble.com/people/podartist/works/22431751-neon-orange-puffy-stitch-quilt

 

Can anyone see what im doing wrong when i try and use the stored string $url ? $url is exactly the same as the url so im lost.

 

Hope that makes sense. Thanks in advance

 

 

[dkub]

Why do you have quotes around $url in your file_get_contents call? Any quotes are unnecessary here, and single quotes prevent string interpolation, meaning you're passing the literal string "$url" as your parameter.

[Semnomic]

I know thats where the problem is i tried      ''   and   ""  so i dont know why its not working,

 

I can echo it so i know its there/stored but i can use it in the second part of code. What im trying to do is get that OG image to appear on my form.

 

How would you make a small form that grabs an OG image from that url i gave and echos it out after you submit? If i can get it to echo i will be ok with the image part.