How can I customize wp_footer, where is the code that controls what this function does?

This could be multiple things. I’m not sure what the credits do. However, the chance is quite big that the search field is being created by a widget, shown in the get_sidebar('main'). Under “Appearance” > “Widgets”, you should be able to find more information.

The template being called is probably sidebar-main.php.

If it is a specific plugin creating the output into the wp_footer() (which I think is unlikely), you could probably find it with add_action('wp_footer', 'the_function');, “the_function” being the function called.

This specific action hooks a function into the wp_footer().

wp_footer is mainly used to load javascripts and other necessities, but not so much to add extra content.

I hope this clears things up for you a bit. In case it didn’t, I’d be glad to clarify as much as possible.

Related Posts:

  1. Get the blog page URL set in Options
  2. Using classes instead of global functions in functions.php
  3. What is the difference between wp_register_sidebar_widget and register_widget?
  4. How to remove search bar from a wordpress theme? [closed]
  5. Auto get_header and get_footer on every template?
  6. Change admin bar to default:off
  7. Create “File-less” Page Template in Functions.php
  8. When to use esc_url, esc_html, esc_attr, and friends?
  9. How to edit bbPress template files – WordPress + BuddyPress + bbPress? [closed]
  10. How to change post thumbnail title and alt attributes to post title?
  11. Why might $input (Settings API) be coming through empty?
  12. Override default cropping in WordPress [duplicate]
  13. Get password when user registers and save it sha1 into database
  14. How do I “unhook” / de-register jQuery so that it’s not called as part of wp_footer();?
  15. Removing the default sidebar from admin panel
  16. Merging PHP download script into `functions.php`
  17. Is there an error in get_the_tag_list()?
  18. Returning Variables back into a template
  19. Allow users to add custom functions to wordpress theme
  20. Change date number to another language/script?
  21. How to add custom template tag in wordpress theme?
  22. wp_enqueue_scripts not called on search page?
  23. Nesting Functions within Functions
  24. Is using eval() ok in this scenario
  25. Custom php page in WordPress theme?
  26. How can a Theme Contain no Header File or Footer File?
  27. Can’t access WordPress functions in file called via Ajax?
  28. Add external js file to footer with id
  29. How to list all images in uploads directory except those that are attached to any post
  30. More than one meta field in a single meta box?
  31. Is there a theme function for is_password_protected()?
  32. how do you create an admin interface in plugin for your theme
  33. How to determine which custom header image is being shown
  34. Toggle Sidebar Display
  35. Custom Taxonomy Tag Search
  36. How to store functions in… functions.php?
  37. Unhook jQuery from WooCommerce via `functions.php`? [closed]
  38. trying to use wp_handle_upload with ajax
  39. Implement advanced search
  40. Why is the post type on the search result page random?
  41. Should I use include or load_template for including shortcodes, plugins and so on?
  42. Check if home.php and set home.php as page_on_front
  43. Non-Blog Website without Search: are comments.php and search.php in theme still required?
  44. Custom WordPress Theme – Search not working on posts
  45. Should I use add_filter for functions in function.php of the theme?
  46. after renaming my wp-content folder, how do I upgrade my wordpress version?
  47. Pass variable to hook. Its possible?
  48. Edit footer via customizer
  49. Search filter by Post title OR Meta Title Value [duplicate]
  50. WordPress Unite Theme: Footer isn’t sticking [closed]
  51. WordPress Filtering Custom Post Type by Metadata and Search Heirachy
  52. Theme Customizer not loading JS for live preview
  53. Remove “You are using WordPress 3.2.1” from Right Now Dashboard Widget
  54. Replace function in a child theme
  55. Custom theme, contact form 7 & fast secure form doesn’t work
  56. How to change footer or for different kinds of users in wordpress?
  57. Change the “Default Avatar” admin option via functions.php
  58. Replace single_template filter with what for default posts?
  59. JQuery undefined and Stylesheet loads in bottom along with js files
  60. How to call the_time current?
  61. Post and page content not displaying in search results
  62. $_POSTing to and modifying the WP search results page
  63. Custom theme won’t use search.php
  64. Changing sidebar.php and footer.php depending on URL
  65. Changing footer depending on URL (poli language site)
  66. Add content after get_header
  67. Can’t change theme name
  68. How to set default values for edit_post_link() in my theme?
  69. Search Form Not Working
  70. altering search terms
  71. How to make excerpt image be full size instead of thumbnail?
  72. Custom search template is showing 404 when adding query string
  73. Woocommerce AJAX filters option loading spiner – problem on mobile device
  74. Why not works the search.php file?
  75. Is it possible to show sort page excerpt in search.php
  76. how to change footer content for certain pages only
  77. New theme HTML5 Support for Search in WordPress 4.4
  78. WordPress Custom Search By Alphabet and order by asc and sesc
  79. Incorrect search results in search.php – issue triggered by using `define(‘BodyID’, ‘search’); the_post();` in search.php
  80. get_footer not working boilerplate theme
  81. enqueue script if page is not equal to
  82. apply_filters to featured image
  83. Mamp pro permalink issues. Pages keep reverting to index.php
  84. The normal loop with different styles doesn’t work in search.php
  85. loading custom.js file after jquery is loaded
  86. How to reuse parts of WordPress site e.g. header, footer, part of header for multiple WordPress sites?
  87. Search Results not displaying for multiple word search
  88. custom theme’s search not working
  89. Creating custom function in wordpress to return data from database
  90. Getting URL of Resized Image
  91. Adding a new layout for genesis
  92. themeforce (happytables framework) implementation
  93. comment_form() generates the wrong action url
  94. A two column loop with one lead post
  95. new theme permissions don’t allow me to edit
  96. Avoid theme updates, just one theme
  97. Is there a way to retrieve the calling template part?
  98. How can I assign separate stylesheets to different pages?
  99. Calling a WP Plugin Function’s Variable in Theme Template [duplicate]
  100. Jquery Ui Tabs not working