Get $_POST & $_REQUEST values before adding/updating post

Related Posts:

1. Check for update vs new post on save_post action
2. How to avoid infinite loop in save_post callback
3. $update is always true in save_post
4. Action hook ‘save_post’ triggered when deleting posts
5. get post meta before it is updated (during SAVE_POST)
6. save_post action firing before I publish / save the post
7. save_post action only when creating a new post
8. Check if value has changed on save_post
9. Minimum Word Count Before A Post Can Be Made Pending Review
10. update_post_meta() not working in save_post
11. How do I save each option in a multiple select menu as it’s own meta_key + meta_value pair?
12. Update post on save
13. Post meta checkbox becomes unchecked occasionally
14. Return code from save_post action?
15. update_post_meta not working in save_post
16. save_post only saves meta data on second save
17. Get Post ID with insert/edit link
18. How to manage saving custom field from Quick edit and Post Save using save_post action hook without colliding each other?
19. Why save_post_$(custom_post_type) is fired even if I am not already saving a post?
20. Set the value of custom field when post is published or updated
21. pass error to admin_notices on “quick edit”/save_post action
22. save_post requiere at least one uploaded file to be published
23. How can I create a new user account while creating a new post, and then set that new user as the author of that new post?
24. Validate post checking if child term is assigned
25. Clear cache on post of one type when something happens to post of other type
26. Why not fire the save_post event?
27. Compare custom taxonomies of updated post (or new post) [Updated with progress]
28. WordPress 4.9.8 doesn’t save if content has style=”
29. Reset all transients on post or page save
30. Using PODS data with save_post
31. Cant’t delete my custom posts
32. where does this $post_id come from?
33. Update current WP post every 3 minutes [closed]
34. Changing new post to “pending” on publish – but “Publish failed” – why?
35. update_post_meta not working in foreach
36. Save post in another table
37. Strange bug on post/page save
38. draft_to_pending action doesn’t seem to fire
39. What action to use for when a post is saved / published, with a caveat
40. Custom wp_editor doesn’t update post_content
41. Save custom value to main content of post
42. Check for page template on save_post hook
43. Access NEW/UPDATED post values in save_post() callback function
44. save button grayed out randomly
45. Post editor doesn’t save embed media [closed]
46. How to get a post meta value and pass that to update_option when a post is created or updated?
47. WordPress save meta data : Displaying the word Array when selected
48. Save current post using custom save button
49. Connection Reset on post/page save
50. Meta data not saved on save_post
51. Insert/Update DB table when making new post or update older one
52. Prevent Page/Post From Being Created based on Pages/Posts per User per Time Unit
53. How to debug | Some times the “Save Draft” button seems to spin but does not actually save
54. My custom title gets duplicated at every save or post update
55. Use save_post to generate file on wordpress
56. Detect, if post is saved manually or programmatically in save_post-hook
57. Why does save_post action fire when creating a new post?
58. Return $post_id when DOING_AUTOSAVE?
59. Why won’t my metabox data save?
60. How to force function to run as the last one when saving the post?
61. Wp_update_post: Infinite loop even with remove_action solution, OOP
62. Disallow a user to post in certain categories
63. Get updated meta data after save_post hook
64. Manipulating post meta in the customizer
65. Non-hierarchical custom taxonomy using checkboxes on edit-screen -> saving issue
66. Update Custom Field on Imported Post Creation
67. How to auto-update child posts whenever the parent post is updated?
68. Remove empty lines ( ) when author updates their post
69. How to run a function once on every post in database?
70. WordPress Gutenberg get page template value when post updated?
71. get_terms on save_post hook
72. Trigger “unsaved changes” dialog for custom post meta changes
73. Support auto-save and revisions for custom fields
74. WordPress turns HTML code to HTML entities
75. Updating the database with advanced custom fields
76. Plugin with action ‘save_post’ needs to press publish twice on order to publish
77. Programmatically save one/any post
78. Add category only if post has custom taxonomy category
79. Checked() function on a multidimensional array
80. Mutiple Select only POSTing 1 value
81. Allow only one post with specific meta value
82. Can’t Get Metabox Data Saved Assistance Needed
83. Custom metabox not displaying multiselect data in edit mode
84. How to validate select field in post meta?
85. Update post meta within save_post action
86. Perform function on publish AND save (not just save)
87. How to create a front facing user sign up, log in and profile pages like FoodGawker.Com [closed]
88. How to create a user ability to save pages with full url?
89. update a custom field with the value of another existing custom field
90. save_post function keeps triggering: Warning: array_map(): Argument #2 should be an array… when restoring from trash
91. Link two different post using there post_id in post meta
92. Metabox is not saving
93. Why WordPress takes time to make request to save post?
94. A correct hook for saving meta boxes data
95. Not Able to Display Metabox Saved Checkbox and Selected option After Save/ Update
96. Save post to category with gravity forms (post_data) [closed]
97. if condition from post_meta not working in save_post
98. How do I set a custom post type Category after import using wp_set_post_terms
99. Multiple triggers when publishing, saving or updating a post in WordPress
100. Resaving posts to update static blocks