How do I do this?: If custom post type exists, echo it, else do not

No need to be that complex, you can use the has_post_thumbnail function

    <?php if(has_post_thumbnail()): ?>
      <a href="https://wordpress.stackexchange.com/questions/35217/<?php the_permalink(); ?>"><img src="<?php bloginfo(url); ?><?php echo get_post_meta($post->ID, 'featured-image-large', true); ?>" title="<?php echo get_post_meta($post->ID, 'featured-image-title', true); ?>" /></a>

   <?php endif; ?>

et voila! =)

Related Posts:

  1. How to create a custom search for custom post type?
  2. Extending the search context in the admin list post screen
  3. Include custom taxonomy term in search
  4. Creating a search form for custom fields
  5. Searching multiple custom post types and pages
  6. How can I change the admin search posts fields?
  7. group search results by post type?
  8. Development of a WordPress Search Plugin – Best Practices
  9. Admin Area Custom Type Search By Meta Fields Without Title & Content
  10. Simple way to search custom-post types only
  11. Custom post type admin search
  12. Using standard search function with custom post type
  13. The right way to create a custom search page for complex custom post types
  14. Search everything (posts, pages, tags, cpt, meta)
  15. Search Custom Post Type with all meta attached?
  16. filter search result with custom post type meta key
  17. Custom search for custom post type, custom meta and search fields
  18. Limit search form to 4 custom post types only
  19. Search results ordered by custom post types are not grouped
  20. Search Post Title Only [duplicate]
  21. How can I include meta box content when searching?
  22. Customize Search to only search current custom post type
  23. How to search from specific post type with tags?
  24. How to search CPT’s by meta query from the admin dashboard?
  25. multiple search forms and search results
  26. Custom Fields vs Separate Table
  27. Add custom post type archives to search results?
  28. CPT Meta Searching
  29. How to filter search results by post type?
  30. How to create an advanced filter search?
  31. How to search map address in custom post type?
  32. Custom search results page query, link permalink to post title while separating by post types
  33. Custom Search for Drafts in Custom Post Type
  34. Multiple meta_values in the pre_get_posts filter?
  35. How to order separated Custom Post Search results
  36. search also in taxonomy, tags and custom fields
  37. Custom post type search using $_SESSION and pre_get_posts
  38. Custom Post Type And “fopen”
  39. Filter custom posts using auto populated dropdown selectors
  40. Make parts of your wordpress website completely built with data from external APIs?
  41. Including metaboxes from custom post types in global search — continued
  42. Custom post type not showing in search result
  43. What to and how to proceed with CPT to make DB small and efficient?
  44. Auto Complete Search
  45. Remotely search WordPress sites using xml-rpc
  46. BBPress Search results in WordPress search
  47. Limit Search to Post Type With Apostrophe return search not found
  48. Search filter triggered & sort by custom post type
  49. Set Custom Post Type in Widget Settings for use in Widget
  50. Displaying and searching Custom Posts
  51. Search by tag name and category
  52. dropdowboxes with pre-selected custom fields optios that filters the results according seach needs
  53. Different results between permalink and query var search
  54. How to let users choose where to search for posts?
  55. WordPress Custom Search by post_type
  56. What content types are shown at a search page?
  57. Search one custom post type ONLY, disable “all posts”
  58. Pagination Error : Duplicate argument being outputted
  59. Custom Empty Results page for my Custom Post Type
  60. Select2 AJAX and WP Query Returns ALL and does not filter
  61. search custom post type by custom fields on front end
  62. Custom Search | check multiple meta_value for search value
  63. Searching post types
  64. Blank search results on custom search
  65. Limit search field to just search a custom post type with custom fields
  66. Building a Data Intensive Website with WordPress
  67. Display future posts in search
  68. Redirecting search to specific templates with $_GET[“post_type”]
  69. WordPress CPT Taxonomy Dashboard Search – How to include taxonomy in search?
  70. Is it possible to get the specific content on the search page?
  71. Search for custom field input of a custom post type in ajax live search
  72. In the php, how can I have a category of a custom post type display?
  73. Search Function not searching correct custom_post_type even though post_type is defined in search args
  74. WP_List_Table Inside Metabox Not Working on Clicking Search Button
  75. Custom search for a custom post type in WordPress
  76. Advanced search form with multiple custom fields
  77. Search in multiple specific post types
  78. I can not display search template created from a post type custom
  79. Creating a search results page from a custom post type in a plugin?
  80. Search custom post type result in same template page
  81. Search facility with directories
  82. Create Second Search Page Only for Custom Post Type
  83. custom search form for custom post
  84. Custom post url in search.php isn’t the correct rewrited url
  85. Conditional posts in WP_query for search
  86. Manually build WP_Query
  87. Extensive search filtering and results->PDF in the front-end
  88. Trying to modify custom search function in plugin to search postmeta table for keyword as well as posts table
  89. pre_get_posts not firing at all
  90. Custom post type blog pagination conflict
  91. Diffrent search templates for different post types
  92. Advanced search form with filters for custom taxonomies and custom fields
  93. Problem with custom post type search
  94. Searching for a single custom post type, buddypress
  95. admin search of pages returns custom post types
  96. WordPress search results
  97. Drop Down Filter with CPT as Options for Search Form
  98. Custom Field Search
  99. WordPress search results grouped by post type
  100. Group search results by post type, but having a unique heading for each section?