The work of WordPress Function update_post

The supports parameter for the post type has to ask for revisions.

Example:

register_post_type( 
    'portfolio', 
    array( 
        'supports' => array ( 'revisions' ) 
    ) 
);

Related Posts:

  1. change a post status when users update posts?
  2. Automatically insert php function into post $the_content
  3. Allow Post Author to be 0 on Update
  4. Use /prefix/postname as a slug in post_name?
  5. Function working in single.php but not working in custom template file
  6. What’s the difference between esc_html, esc_attr, esc_html_e, and so on?
  7. Is it possible to rename a post format?
  8. Is there a hook or function I can use to display all theme files being used on a current page?
  9. How to paginate the get_users function?
  10. opening links in new tab using – add_filter( ‘the_content’, ‘make_clickable’);
  11. How can I remove the title “leave a reply” in the comment box in twentyeleven?
  12. Child theme – overriding add_image_size by a child theme [duplicate]
  13. Check if has any sidebar active on current page
  14. Compare post levels and user levels wishlist member
  15. Change ul class=”children” for wp_list_pages?
  16. Target a certain page within wordpress backend (admin) i.e. Pages > About
  17. Set default options for inserting media
  18. Login using the password from protected pages
  19. Remove tag on my RSS Feed
  20. Automated mark posts as featured every day
  21. Session is not starting
  22. Enqueuing External Javascript functions.php
  23. Child Theme Not Overriding Parent Theme
  24. Function to wrap the_content in a div
  25. How to run a function once on every post in database?
  26. Custom image size in Media Dropdown
  27. Trouble using antispambot()
  28. Polylang: pll_e() & pll__() on functions.php, doesn’t work
  29. Post Pagination Showing Same Posts Every Page
  30. WP_Remote_Get Not working
  31. Debugging with functions.php
  32. How to filter a table in post content without plugins? [closed]
  33. Getting first Image from post
  34. Inserting a functions output after the content
  35. Combine two different filter callback functions
  36. Having issues with a foreach inside of a shortcode with ACF gallery
  37. Don’t delete a page if it holds users
  38. Change label for registration Fields
  39. Warning: : DOMDocument::loadHTML(): Empty string supplied as input in functions.php when adding classes to post images
  40. Remove stylesheets from Campaign Monitor plugin
  41. How to install Segment on WordPress without a plugin
  42. How to search using ajax for exact phrase or words in an input field?
  43. I can’t enqueue my scripts – They literally aren’t being added to my site
  44. Using wp_redirect and .htaccess to re-route searches (and pass along the remaining GET vars)
  45. Multisite 404 on pages – rewrite error breaks database
  46. Dashboard widget custom positioning?
  47. Need help “sanitizing” a custom function that pulls category slug into body class
  48. Make wp_link_pages() suitable for Twitter Bootstrap markup
  49. How to get data from an array using get_user_meta()
  50. Space Not Being Generated in HTML Output?
  51. Prevent custom field from being updated after first publish
  52. laoding bloginfo url in function array?
  53. How to edit classes in body tag?
  54. Add a field into a shortcode of an extension
  55. $_Get and &_REQUEST Index Undefined on Functions.php
  56. How to edit/replace Parent functions.php function in Child Theme to add “Walker” class
  57. Load scripts for do_shortcode( ‘ [ my_shortcode ] ‘ )
  58. get_terms and meta_value results blank
  59. How to modify get_the_excerpt() when post-format equals ‘quote’?
  60. New checkbox in custom widget isn’t saving data
  61. Dequeue scripts in IE7 only using functions.php
  62. Why I can’t load my JavaScripts using an hook inside my functions.php file?
  63. Post to category based on email domain, for a post-by-email plugin
  64. Featured Image keeps cropping
  65. Function Suddenly Stopped Working
  66. Prevent creating multiple image resizes in twentytwelve template
  67. Shortcode of a function
  68. Using One Function To Create Two Different Shortcodes
  69. Change Page Title
  70. How to Not Show posts on Category page?
  71. Put images in the media from url functions
  72. Paragraph spaces in email template function
  73. Is it possible to load recaptcha script only in url with fragment identifier (#)?
  74. page shows short code not output
  75. Including Font Awesome in a Custom Theme
  76. Scheduled post delete – can’t pass the cron arguments
  77. Prevent function from triggering on current page
  78. Assign IDs to headings in ACF using functions.php
  79. How would I correctly implement a new if statement in a child functions file?
  80. Multiple Notifications SetInterval
  81. Child Theme not loading multiple stylesheets
  82. How To Show Shortcodes In WordPress Custom Fields?
  83. How to debug function file causing white screen
  84. Post date on Custom field
  85. Fatal error: Call to undefined function add_action() – an untouched problem
  86. Author info does not show up when author has no posts
  87. How to wp_enqueue_script with html?
  88. Load CSS conditional on custom field is present
  89. Modify sub_menu function to show pages below a specifically set page
  90. Add custom class to all URLs on entire site
  91. Is it possible to change parameters of Parent theme function in the Child theme?
  92. Unregistering custom tinymce plugin?
  93. Combining wp_current_user() and a variable
  94. Init hook for header send
  95. java script error Uncaught SyntaxError: Unexpected token ILLEGAL
  96. site_url is not honoring scheme
  97. new to javascript – using in instead of functions.php, not loading correctly
  98. Remove Disqus JavaScript from homepage
  99. Get all users from role and add to dropdown (select) – wordpress, javascript
  100. WordPress enque the same script causes the setInterval not to work