How does WordPress determine if a paged query var is too high?

A query either returns posts or it doesn’t. Whether it’s a non-existent page number, a non-existent category name, a non-existent post name, etc., it’s all the same.

The rewrite rules is matched, which populates the query vars, which forms the query. The query is sent to the database, and the database returns some amount of posts between zero and whatever number was requested.

The only difference between all of those cases is what it does after it’s determined to be a 404, which depends on what rewrite rule was matched. In the case that the name query var is populated, it tries to find the closest match with an additional LIKE query, and redirects there if something is found.

Related Posts:

  1. Why does wordpress still strip my query var?
  2. Dynamically redirect page based on URL?
  3. Change Query String to pretty permalink
  4. Nginx rewrite rules
  5. WordPress Redirects When a Query String Contains a Number
  6. Append a value to a certain page’s URL before page load
  7. Retrieve query var within functions.php
  8. Rewrite URL query string for all pages
  9. Need help with custom rewrite rule
  10. Using add_rewrite_tag to create urls for page sections
  11. Masking wp-content/themes/name/images to just images directory using htaccess
  12. Using custom/dynamic “slug” for a page
  13. How to make pages slug have priority over any other taxonomies like custom-post, post or category
  14. How do I remove a rewrite rule?
  15. Use subdomain for certain urls
  16. Rewrite URL – how to do a SEO-friendly Unicode custom URL?
  17. Can I call a custom plugin with a direct URL
  18. Custom slug in front of search URL
  19. Display posts with author in the url with custom post types
  20. Clash of the rewrites
  21. Query Vars for the Homepage?
  22. Disable wordpress pagination URL rewrite for specific page
  23. How to use Post Custom Metadata in Post Titles and Post Permalinks
  24. Using WordPress with Apache behind an nginx reverse proxy
  25. How do i change the search permanent links
  26. add_rewrite_rule() not playing nice with child pages
  27. Custom rewrite rules are sending everything to index.php
  28. WordPress Network on IIS7/SQL Server – Rewrite Issues
  29. Custom comments
  30. How to Change Author Posts URL
  31. Change permalink for default archive – yearly
  32. Add .html extension to only one page in my WordPress site
  33. Migrating a page to be an article
  34. Multiple Permalinks for Same Post
  35. How to perform a query at the URL?
  36. url rewriting for most recent post
  37. Is there a way to create alias without using htacess, permalinks or delving into code?
  38. Remove “/page/1” from the URL
  39. hard flush_rewrite_rules() not regenerating .htaccess
  40. Use custom template on certain URLs
  41. Rewrite Rules Are Redirecting and Not Passing VARs
  42. How to rewrite taxonomy and tags URL
  43. Changing WordPress Address URL disaster
  44. Prevent WordPress from Rewriting URL for one template
  45. Disable Pagination on Pages
  46. Rewriting a page with a custom parameter
  47. WordPress 3.9 breaks invalid permalinks.. code fix possible?
  48. Hide admin login without plugin
  49. Need help with simple rewrite rule (shouldn’t this be easy?)
  50. How to add a custom redirect rule for Post as subdomains?
  51. How to preserve the query string while using add_rewrite_rule and default public query vars
  52. How do I display only the parent page in the url
  53. “View post” leads to odd URL
  54. Redirect HTTP to HTTPS for all sub domains (blog posts)
  55. Get url param no longer works when using add_rewrite_rule
  56. How to use add_rewrite_rule in subdomain
  57. How can I redirect product url to category then product url?
  58. Map secondary domain to other’s virtual subfolder
  59. adding custom controller called by front-end
  60. rewrite attachment url with attachment title
  61. Rewrite Rules returning wrong data
  62. htaccess rewrite, adding segment to url
  63. Custom Download Link
  64. Adding a query string to only one page url
  65. force www rewrite if wordpress put in a folder
  66. Current post ID – relative url
  67. How to use wp rewrite to hide form action url?
  68. Custom Structure permalinks error 404
  69. WordPress Rewrite rule is not working
  70. change the url in wordpress
  71. how to move another machine or server without dealing with IP
  72. change url for portfolio image
  73. Use URI suffix as parameter and ignore when resolving page
  74. add_rewrite_rule with optional parameters
  75. Why wordpress rewrite my custom URL?
  76. Rewrite rule regex help required
  77. Redirect empty search to another page
  78. Rewrite dynamic URLs as pretty URLs in WordPress functions.php (add_rewrite_rule) – what’s wrong with my code?
  79. WordPress URL redirect and replace ? question mark
  80. Rewrite rule not working, suspect redirect string
  81. WordPress index in subdirectory, blogposts in root directory
  82. Rewrite Url using .htaccess or hook
  83. url restructure or rewrite having $_GET variables
  84. How to use a RewriteRule to change endpoint url
  85. Custom taxonomy Rewrite Rule
  86. I want to add one extra field to my URLs, I’m using Rewrite functions but it doesn’t work
  87. .htaccess RewriteRule to include post type and taxonomy
  88. What’s the best approach to do this?
  89. Font Page overrides rewrites
  90. WordPress Rewrite: Ignore Specific Pattern
  91. WPNetwork with custom URL Rewrite rules
  92. WordPress index page is returning 404 and admin page requires /index.php in url
  93. Stop wordpress to redirecting home page if no page found
  94. Additional .htaccess rules based on wp page
  95. URL Rewriting in WordPress
  96. URL rewrites af
  97. Hide / rewrite download link
  98. Lost WordPress website access after changing URL [closed]
  99. Rewrite rule to simulate page hierarchy results in 404
  100. add_rewrite_rule not working with custom variables
tech