Query arg not available on init

The query_vars filter does not run until after init. The earliest hook you can use get_query_var() is parse_request, which runs after init, but before send_headers, wp, template_redirect, and template_include.

Related Posts:

  1. use query var argument as verification link?
  2. What does query_var do in register_taxonomy
  3. Query var SEO URL
  4. get_query_var function not working at all
  5. How to correctly escape query variables to be used in WP_Query
  6. Filtered query_vars becomes global. Why does this work?
  7. Search custom post type by meta data
  8. Custom query_var causes displaying posts archive on front page
  9. Query two taxonomies via URL or link?
  10. I can’t fetch query parameters ($_GET parameters) with get_query_var
  11. How to add query parameters to all internal links?
  12. Passing Variable as URL Parameter — Security concerns?
  13. Custom permalink with pagination
  14. Enqueue Script with URL parameters
  15. Pagination Doesn’t Work
  16. Custom Rewrite with Query vars
  17. Rewrite Rule for Custom Page with Query Vars in URL
  18. WordPress query through Products variation stock [closed]
  19. set_query_var doesn’t seem to work on init hook
  20. query_vars Filter: Would You Ever Use It When $_GET is Available and You Don’t Need a ‘Pretty’ URL?
  21. Determine WP_Query parameters from URL
  22. WordPress rewrite rules for state and city
  23. Rewrite rules and query for virtual page
  24. Passing array of strings to a SQL statement in a WordPress plugin
  25. How to Modify Existing Rewrite Rules?
  26. Rewrite URL Parameter And Force ‘Pretty’ Permalink
  27. Why query_vars get altered in WP_Query Object?
  28. Is there a plugin to record querystring parameters for a page (for customer tracking)? [closed]
  29. Taxonomy page template changing when using query variables
  30. Is it safe to use $_POST directly in my plugin instead of using admin-ajax.php to receive data from ajax?
  31. add_rewrite_rule query_var not being set
  32. WordPress query vars are not added
  33. Rewrite rule to prettify two $_GET variables while in a new endpoint from a page
  34. Rewriting get_next_posts_link() for custom loop
  35. Changing WP_Query params with url Query Var
  36. get_query_var returns wrong default value
  37. get_query_var not working for subdirectory
  38. query_vars filter not working even though query string parameter is present
  39. Custom query var rewriting with only variable
  40. get_query_var not works
  41. Custom rewrite_rules – only pass numbers and not alphabetic characters
  42. Redirect Uploads Folder to Query Vars in WordPress
  43. add_filter(‘query_vars’) not working in custom template
  44. Get query parameters from external url and make a redirection
  45. add_rewrite_rule permalinks break in WordPress 4.5
  46. How to get a query variable?
  47. How to: wordpress job listing and candidates details
  48. how to access query string in wordpress?
  49. Query Vars Not Set in Main Query
  50. Integer based rewrite isn’t recognized for value of 1
  51. How to unset a set query variable?
  52. Why I can not I use the variable outside my function?
  53. Code syntax error, “userfullName undefined”
  54. How to append a query string to pagination?
  55. Query_vars support in Rest API
  56. How to pass a variable to get_template_part that’s updated every time the template part is called?
  57. Rewrite Rule for Post Meta
  58. How to call code when adding WooCommerce menu items via woocommerce_account_menu_items
  59. Redirect old query string URLs to new add_rewrite_rule URL
  60. How to pass a query string to another page on the same site?
  61. Pass form input via url variable
  62. Add pagination to a template loaded by query variable
  63. How to pass menu slug as a variable to wp_nav_menu?
  64. Custom post types and custom variables — add_rewrite_tag() not working
  65. WordPress add a rewrite rule to a page to accept a GET variable
  66. Creating an alternate path for a page
  67. Query vars to return the homepage
  68. WordPress keeps removing query var from the URL
  69. Custom query_var to get URL paramater not working
  70. How can I get custom post types to recognize pretty permalink variables?
  71. Theme customisation – how to store javascript externally when it utilises php variables?
  72. Rewrite query var on postname
  73. Custom permalink question
  74. Why does a header location on admin_head remove the query var I’m setting in the location?
  75. WordPress pass url to page template when page does not exist
  76. How to include a query_vars value in document_title_parts?
  77. Custom Fields Query Vars and Rewrite not working
  78. CPT year wise archive based on custom date Field
  79. Get list of all Topics in use by a custom post type
  80. Prevent WordPress to remove query vars from url
  81. Own query vars are not displayed
  82. Taxonomy Rewrite Problem
  83. Change default query parameters
  84. Pretty Filter URL
  85. Single Post (CPT) in two pages – Normal and Extended
  86. How to redirect a query string to a “virtual” subdirectory
  87. Last query_var not working with rewritten URL
  88. How to use endpoint, but remove/rewrite endpoint base?
  89. Connect custom rewrite rules and query variables to wordpress navigation
  90. Rewrite URL to plugin file
  91. passing javascript variable into php wordpress
  92. Passing query variables to a custom page template
  93. Redirect if string found in URL
  94. Passing variables in the permalink structure on a custom post type
  95. query_vars category_name only display one catgory out of multiple categories
  96. $_GET vs get_query_var()
  97. Add additional URL variations for a Post
  98. Need help with regex
  99. query_vars doesn’t return query string (trying to get data from $wpdb)
  100. Send a variable with a URL and get a variable with Wp query
error code: 523