Ticket #11571: 11571.3.diff

post-thumbnail-template.php

@@ -102 +102 @@
         return apply_filters( 'post_thumbnail_html', $html, $post_id, $post_thumbnail_id, $size, $attr );
 }
 
+/**
+ * Retrieve Post Thumbnail URL
+ *
+ * @param int $post_id Optional. Post ID.
+ * @param string $size Optional. Image size.  Defaults to 'post-thumbnail'.
+ */
+function get_the_post_thumbnail_src( $post_id = null, $size = 'post-thumbnail' ) {
+        $post_id = ( NULL === $post_id ) ? get_the_ID() : $post_id;
+        $post_thumbnail_id = get_post_thumbnail_id( $post_id );
+
+        if ( $post_thumbnail_id ) {
+                if ( in_the_loop() )
+                        update_post_thumbnail_cache();
+                $size = apply_filters( 'post_thumbnail_size', $size );
+                list( $src ) = wp_get_attachment_image_src( $post_thumbnail_id, $size, false );
+        } else {
+                $src = FALSE;
+        }
+        return $src;
+}
+
 ?>