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Wordpress MU timthumb fix

/ Published in: PHP
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This function will return the correct url for the timthumb php script (wordpress 3.0 or higher required!)

Usage: just call the function in your theme with the post id as parameter, it will return a value so store this into a variable (must be inside the wordpress loop to work)


The function:
$thumb = get_timthumb_thumbnail($post->ID);


I've tested this successfully on my servers so please let me know if you are having any problem with it.

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  1. /* 
  2. 	WORDPRESS MU TIMTHUMB FIX
  3. 	This function will return the correct url for the timthumb php script (wordpress 3.0 or higher required!)
  4.  
  5. 	Usage: just call the function in your theme with the post id as parameter, it will return a value so store this into a variable (must be inside the wordpress loop to work)
  6.  
  7. 	The function:
  8. 	$thumb = get_timthumb_thumbnail($post->ID);
  9. */
  10. function get_timthumb_thumbnail($post_id = null) {
  11. 	global $blog_id;
  12.  
  13. 	//we can access it, so why not use it?
  14. 	$is_mu = WP_ALLOW_MULTISITE;
  15.  
  16. 	//if is true it means it's a wordpress MU site and we'll have to do some work
  17. 	if($is_mu == true):
  18. 		$thumbnail_id=get_the_post_thumbnail($post_id);
  19. 		preg_match ('/src="(.*)" class/',$thumbnail_id,$link);
  20. 		$imageParts = explode('files/', $link[1]);
  21. 		if (!empty($imageParts[1])):
  22. 			//check if the image is in the blog directory
  23. 			if(@getimagesize('./wp-content/blogs.dir/' . $blog_id . '/files/' . $imageParts[1])):
  24.  
  25. 				$thumbnail = 'http://'.$_SERVER['HTTP_HOST'].'/wp-content/blogs.dir/' . $blog_id . '/files/' . $imageParts[1];
  26.  
  27. 			endif;
  28. 			//check if the image is in the main uploads directory (you never know)
  29. 			if(@getimagesize('./wp-content/uploads/' . $imageParts[1])):
  30.  
  31. 				$thumbnail = 'http://'.$_SERVER['HTTP_HOST'].'/wp-content/uploads/' . $imageParts[1];
  32.  
  33. 			endif;
  34.                     else:
  35.                             $imageParts = explode('uploads/', $link[1]);
  36.                             if(@getimagesize('./wp-content/uploads/' . $imageParts[1])):
  37.                                 $thumbnail = 'http://'.$_SERVER['HTTP_HOST'].'/wp-content/uploads/' . $imageParts[1];
  38.                             endif;
  39. 		endif;
  40.  
  41. 	else:
  42. 		$thumbnail_id=get_the_post_thumbnail($post_id);
  43. 			preg_match ('/src="(.*)" class/',$thumbnail_id,$link);
  44. 			$thumbnail = $link[1];
  45. 	endif;
  46.  
  47. 	return $thumbnail;
  48. }

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