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I am trying to fetch the uploaded images using the link URL (The Link URL option is available in the Add Media when we upload/insert media) and display it on web. I have gone through the methods has_post_thumbnail and the_post_thumbnail which are working perfect for me. Now, i am trying to display images (other than featured image) with certain sizing options (as available in the_post_thumbnail).

I am using the Link URL associated with the uploaded image with the help of the function $im =imagecreatefromjpeg($url[image]); and imagejpeg($im); to display it on web but all it displays it is special characters !

Is there a way to do it ?

Update code for fetching a single image from media library:

$media_query = new WP_Query
(
          array(
          'post_parent' => get_the_ID(), 
          'post_type' => 'attachment', 
          'post_status' => 'inherit',
          'post_title' => $url[image]
          )
);

foreach ($media_query->posts as $post) 
{
  print_r(wp_get_attachment_image($post->ID));
  $imageFound = true;
  break;
}

$url[image] contains the post_title. The problem is this query is fetching all the images from the media library ! Am i missing something ?

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I'm not clear on exactly what you're trying to do, or why you're creating a new image with GD (which seems extremely inefficient). Maybe you want wp_get_attachment_image_src? –  Milo Jan 21 '12 at 17:50
    
Well,i have uploaded an image in the media library from my hard drive. I want to fetch that uploaded image re-size it into a thumbnail and display it on the browser when i publish it..all of this programmatically.. is there a way to do it ? –  Adithya Jan 22 '12 at 10:20
    
attachments are children of the post they are attached to. see get_posts function to fetch attachment IDs for use with wp_get_attachment_image_src. –  Milo Jan 22 '12 at 16:18
    
i just want one image (based on the post_title say). So i am using 'WP_Query' to fetch the image from DB. The result though is fetching all images from the media !! Can you suggest something ? –  Adithya Jan 23 '12 at 17:22
    
I have got the solution. I went through the documentation and it said that post_title is actually recognized in DB by name attribute.I changed my query accordingly and it fetches only one image as expected. Thanks! –  Adithya Jan 24 '12 at 7:12
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2 Answers 2

I want to fetch that uploaded image re-size it into a thumbnail and display it on the browser when i publish it..all of this programmatically.. is there a way to do it?

You don't need to do this manually. The add_image_size() function and the wp_get_attachment_image_src() function allow you to create and display alternate sizes for uploaded images.

Rather than running imagecreatefromjpeg() on every page load (which I assume is what you're doing based on your question), you can just create the images on upload (i.e., once).

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I think what you're looking for is either wp_get_attachment_image : http://codex.wordpress.org/Function_Reference/wp_get_attachment_image or perhaps one of the related functions.

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wp_get_attachment_image_src or wp_get_attachment_image takes an attachment_id as a parameter. What do i supply over here ? can i supply the link URL to it ? or the file name of the attached image ? –  Adithya Jan 22 '12 at 11:12
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