What is $post->ID

The post ID.

It’s not possible to say any more without more context. If I had to guess $post in this case is a WP_Post object that represents the current post and the author of the post wants to get some posts while excluding the current post. Just be aware that doing so this way is typically a bad idea.

Related Posts:

  1. Get page ID of page that is set as the posts page
  2. Are post ID’s reliable?
  3. Get current post id in functions.php
  4. get all posts ID from a category
  5. Get the current post ID as a variable in Javascript
  6. Is post ID number always incremental n+
  7. Are all ID’s used unique?
  8. $post->ID displays wrong ID
  9. At my posts archive page, outside the loop, get_the_id() returns the top most post’s ID
  10. Showing random content / pictures from earlier posts in a sticky post?
  11. Get the post_id of a new post
  12. get post id in while loops outputting page id
  13. How can I display a specific user’s first published post?
  14. Undefined variable post_id in custom quick edit coloumn
  15. Getting post id from wp_insert_post_data function?
  16. Does an article (post) id ever change?
  17. How to get the post’s parent ID?
  18. Can a page_id and a post_id be same?
  19. Is there a better, more efficient way to get the post id outside the loop?
  20. Getting current post ID in functions.php
  21. Buddypress activity id
  22. How blog page in WordPress works : blog page retrieve first post ID
  23. Post-ID in url differs from $post->ID
  24. Why is my Blog Page ID == First Post ID?
  25. current post with current author
  26. Is it possible to change post id for an already added menu item in WordPress?
  27. Get ALL post ID’s export list (Only id’s. Php or sql not important )
  28. How to get next post ID?
  29. Search results posts_orderby and ID
  30. Retrieve post ID from “querying” URL
  31. How to get a post’s content? [closed]
  32. obtain the author id given the post id
  33. How to get ID of the page included with get_page()?
  34. How to I retrieve the ID from the Posts page?
  35. Crazy Question – Updating Post ID
  36. Why I can not I use the variable outside my function?
  37. retrieve the oldest post id
  38. WP_Query custom field pass the post id
  39. Accessing Post ID Within Loop
  40. How do post IDs work in WordPress?
  41. Are post, page and category IDs unique to each other?
  42. The loop starting at a certain ID
  43. linking to post outside the loop
  44. Widget to show posts in the sidebar basing on its IDs
  45. Get a post’s ID
  46. Making posts permalinks consistent numbers
  47. How to get post id of last approved comment?
  48. How to get the post id (of the parent custom custom type) in a loop inside a widget?
  49. Get post slug and match with menu item slug to change css
  50. WordPress Post ids big increment
  51. Reuse old post ID for new post after deleting post
  52. Get post attachment with post id
  53. How can i take all ids from untrash_post action?
  54. How do I apply a wordpress function to something with no ID inside an archive page?
  55. Get from the dashboard the ID of the current post being edited
  56. Only get post_id [duplicate]
  57. Surrogate ID for posts, is there an alternative field in the posts table?
  58. Is it possible to have dynamic post id # in add_menu_page()?
  59. Using Post ID and Page ID in same function
  60. unused post IDs
  61. Custom post page has attributes of latest post [closed]
  62. Can I get custom post items in select box (dropdown)
  63. View post with specific category id and name which I selected in the backend (drop-down option)
  64. How to get post ID after removing that post?
  65. How to change all the guid in posts table?
  66. “coming soon” placeholder blog posts?
  67. Restore contents of deleted user
  68. How do I reorder (pop and push) items from WP_Query?
  69. Count posts in category including child categories
  70. Hiding posts from non logged in users
  71. database columns: post_title vs post_name
  72. Autoremove empty custom fields
  73. Group posts by year in loop
  74. Checking is user author of number of posts?
  75. get_next_post() and get_previous_post() return wrong posts
  76. Should I use posts or pages in this scenario?
  77. Distinguish between publish and update? [duplicate]
  78. Display posts from a different website on Genesis Responsive Slider
  79. Query Posts With Over 1000 Views
  80. redirect to uploaded (wordpress) post after form submission from front-end
  81. Where do wordpress posts go?
  82. How to add the time of a post to the list of posts on the administration page?
  83. my post slug gets really long and I can’t change it
  84. Display specific posts on home page
  85. How do I display main query posts in random order using add_filter
  86. How can I display the last updated post with the author, the created date, and the modified date on one line?
  87. How do i bring out post category name in my widget?
  88. Passing values via an Ajax querystring
  89. How can I stop ‘in use’ message from intermittently blocking my wp_posts table?
  90. Get Categories & Posts With Type Article
  91. My post permalinks are always the same
  92. Set multi posts random categories and tags
  93. How can I set and update the the_date according to a custom field of the post
  94. Adding editable content above posts
  95. Post not showing up sometimes on website
  96. Extra field in wp_post instead of postmeta
  97. Same sidebar in all posts as in the category
  98. Update Post with Modified Data
  99. How can add custom commands in post-new.php in wordpress
  100. How to move all images in a post to a single gallery for a bunch of posts?