How to Debug the ‘save_post’ Action?

Your code works just fine on my end. So, I’d say your problem is elsewhere.

Troubleshooting guide.

You can use standard debugging or FirePHP. I also use the following for cases where FirePHP doesn’t display information, i.e., save_post.

function my_log( $msg, $title="" )
{
    $error_dir="/Applications/MAMP/logs/php_error.log";
    $date = date( 'd.m.Y h:i:s' );
    $msg = print_r( $msg, true );
    $log = $title . "  |  " . $msg . "\n";
    error_log( $log, 3, $error_dir );
}

And inside your action callback: my_log( $_POST, 'Contents of $_POST' );.

As far as I know, there’s no such thing as “validate PHP”.
There are editors that’ll show errors while you write: http://www.jetbrains.com/phpstorm/

Related Posts:

  1. Validate custom fields before save using WordPress Rest API
  2. Hook for post and page load
  3. How do you use a CPT as the default home page?
  4. don’t publish custom post type post if a meta data field isn’t valid
  5. CPT Template Not Showing – Getting 404
  6. Calling a Function After New Post Creation for a WordPress Custom Post Type?
  7. Adding a drag and drop re-ordering from a custom post type default list [closed]
  8. get_query_var() not working in pre_get_posts
  9. Filter for “get_post_type_archive_link()”
  10. How to add a button to custom post type’s posts-page
  11. How to hook into the CPT’s title placeholder?
  12. flush_rewrite_rules on save_post Does Not Work on First Post Save
  13. Why get_next_post_link() or get_previous_post_link() doesn’t return the required links?
  14. Admin Post Update Redirection to Posts Screen
  15. How often do you need to register_post_type?
  16. Debug whats going on inside a function called from AJAX
  17. How to create notification on frontend using heartbeat api for multiple custom post types
  18. How to set a custom post type post as static front page?
  19. With what hook can I address all posts from all custom post types when they are published?
  20. specify meta_key / meta_value condition for prev_post_link and next_post_link
  21. Debug output during filter execution doesn’t work
  22. remove_action conditionally for Custom Post Type
  23. What hook should be used to programmatically create a post only when master post is updated?
  24. Creating a function that receives the taxonomy terms that have been changed in a custom post type
  25. How to register custom post types in a plugin?
  26. Add information above a custom post type listing of all posts page
  27. How to validate custom fields for a custom post type before insert?
  28. Remove “Get Shortlink” button in admin of custom post type
  29. Custom Blog Post Listing in Genesis Sample Child Theme
  30. I changed post_type and now I receive 404 errors
  31. Set a default category – if the user didn’t select one- before creating a post
  32. Can’t unregister parent theme’s CPT from my child theme
  33. Modifying date filter on admin page for custom post type to link to custom field
  34. How to debug a blank page?
  35. Hooking in to an archive page?
  36. Add custom column in custom post type edit page
  37. Insert Multiple Post with Same Publish Button
  38. Why is conditionally loading a custom plugin’s code only on a specific custom post type causing the site content to disappear?
  39. How to: Display ACF [fields] on Custom Post Types Utilising WordPress ‘Hooks’? [closed]
  40. Posts are duplicating on wp_post_update
  41. Limit number of custom posts per taxonomy
  42. CPT Template Not Showing – Getting 404
  43. Filter Posts from the Main Query
  44. Categorise Custom Post Types
  45. How can I add a filter to a particular post format?
  46. Is there any way to get list of all possible filter hooks for all post types?
  47. Add a custom text to admin footer in a Custom Post Type page
  48. Get rid of “trash can” for custom post type
  49. Use remove_meta_box conditionally on custom post type
  50. Custom Meta fields Update hook?
  51. wp_trash_post action hook with custom post type
  52. How do I amend form data before it is saved for a custom post type
  53. Add an Outside Wrapper to my Header and Make it Full Width
  54. sortable columns for multiple custom post types not working
  55. How check if a post is saved from backend or frontend?
  56. How to build a WordPress post review system beside commenting
  57. WordPress hook after post content and meta update
  58. WordPress hook which triggers on post import
  59. providing access to post_id or post inside functions.php
  60. Before saving post hook
  61. Creating alternate meta box context locations
  62. Make a custom column sortable by a value from a different custom post type
  63. wordpress post_where set only for my costum post type
  64. Set Default Option Value as Blank for Meta Box
  65. comments hooks on custom post type
  66. Catch and display error on save_post action
  67. How to recover the post ID earlier in the WP admin hook action “firing” sequence?
  68. Limiting actions only to edit.php page for specific custom post type
  69. Using `set_transient()` when saving a custom post type
  70. Using publish_{custom-post-type} hook for custom post type to update meta doesn’t work
  71. Best way to fix bad count on All | Mine | Published
  72. Title and URL Error in Breadcrumb Navigation for Custom Post Types
  73. wp_set_object_terms creates taxonomies but does not add custom posts to it
  74. Add html tot CPT edit screen – no metabox
  75. Plugin Development using classes – Public & Private Callbacks
  76. Custom Post Type action on post update
  77. Show Post Types customized in Template Page
  78. In child theme, add CPT to custom taxonomy registered in parent theme
  79. Store a value in global scope after init hook is fired
  80. Changing CPT permalink
  81. Update main post with same category when creating custom post to update the modified date
  82. Dynamic page for nav items used as filters
  83. Hook create / update post
  84. Sort custom post archives by a meta value from a different custom post type?
  85. Correct way to register custom post type from external php file?
  86. call a function when insert and update a custom post type
  87. Execute code only after user clicks ‘update’ button for CPT being edited
  88. Custom Fields as Post Type Options
  89. Adding Information To All Posts Screen
  90. do action inside a class is not working
  91. Filter Content on all Post Types
  92. Customizing a plugin function using a hook
  93. Strange behaviour using 3.8.1
  94. CPT Template Not Showing – Getting 404
  95. CPT Template Not Showing – Getting 404
  96. add comments custom fields after user is logged in
  97. How to string lines from the_content() hook in WordPress?
  98. Redirect drafted post of custom post type to URL?
  99. Modifying post_type_link hook messing up edit function for a custom post
  100. Change CPT Edit Target Link for Admin List

Leave a Comment