I can’t fetch query parameters ($_GET parameters) with get_query_var

Query vars are for use in the main $wp_query query object, your custom admin page has no main query, so no vars are parsed into a query object that can be accessed via get_query_var. I don’t think there’s anything WordPress-specific that can be used in this case, I would just access the value via $_GET.

Related Posts:

  1. Should I use spl_autoload_register() in my plugin?
  2. How can I save a multiple select array with the settings API for a plug-in options page?
  3. Include WP_Query in my own PHP file?
  4. Using register_activation_hook in classes
  5. Modify previous and next text from pagination links
  6. Is there a way for a plugin to add an attribute to the tag of a theme?
  7. How to use update and delete query in wordpress
  8. Gutenberg Blocks doesn’t render correctly when using do_blocks
  9. add_meta_boxes action with refresh on save
  10. simple wordpress ajax plugin not working when not logged in
  11. Resize Image without cropping
  12. how to create and show sessions in word press?
  13. Custom plugin issue when trying to use the shortcode twice on a page [closed]
  14. When is is_admin() available?
  15. How to get all existing post types
  16. Hiding WordPress Plugin Source Code
  17. Page navigation not showing even tho it should
  18. Query String being Removed Creating a Pagination Issue within a Custom Plugin
  19. wp_loaded hook block script enquequing
  20. Custom filter in admin edit custom post type responding with invalid post type?
  21. WP-PageNavi is showing the first page only
  22. How to find error in my code when the error message is pointing to WP core file?
  23. How to access global variable $menu inside a class function
  24. How to set up VS Code for WP plugin/theme development in 2021? [closed]
  25. Custom user login page by creating a plugin
  26. Singelton class does not work, multiple initialization on page reload
  27. How to upload a file to a folder named after the user_id via plugin
  28. developing a wordpress plugin, have a few PHP Woocommerce related coding questions
  29. Improve page speed loading using CDN and async or defer attribute
  30. Whitelisting items from custom options page
  31. Add_menu_page not displaying the menu in class based plugin
  32. adjust section according to country?
  33. Search not showing all results
  34. PHP > Scheduled Tasks > Sending daily email with dynamic API variables
  35. “Undefined index” error when saving empty array with checkboxes
  36. What exactly do this function declared into functions.php file of a WP theme?
  37. How to use html inside a functions.php code?
  38. WordPress Environment: Dynamic Page using shortcode – how to change the page name for sharing
  39. Extend Woocommerce Widget Class – WC_Widget_Product_Categories
  40. Custom Pagination is Broken
  41. plugin add action hook is not working :
  42. zip unzip attachments in wordpress
  43. Prev/Next Links Broken on Static Front Page Pagination
  44. wordpress admin plugin menu custom css
  45. Any ideas why I am getting “I’m getting “wp-admin/admin-ajax.php 401 (Unauthorized)”
  46. Cant register rest routs from class instance
  47. how to Update 15k products on plugin activation with meta_option
  48. Generating rel=”prev” and rel=”next” using filters
  49. Need help with Code Correction php+wordpress
  50. Hooks for post saving make a post-new.php to load latest post’s data
  51. Need help with pagination
  52. Adding Additional Variables on Menus Page
  53. Using flickr api in custom wordpress plugin
  54. Toolbar Hidden in a Virtual Page
  55. Pagination Not Working (pages duplicating content)
  56. PHP: $_SESSION destroyed after page reload for my custom session
  57. How to correctly escape an echo
  58. Problem with inserting multiple images in gallery of each WooCommerce product programmatically
  59. Is it possible to access admin-ajax.php using PHP?
  60. Payment field disappears on custom Paypal plugin
  61. Adding image upload in tag section – WordPress plugin development
  62. How to Remove Theme Style CSS inside Custom Plugin?
  63. Creating plugin with front-end pages
  64. How to Send Pingbacks for all Posts in WordPress?
  65. Reliable way to add nonce to HTTP Header in WordPress?
  66. I am having errors with checkout on wordpress
  67. ssl redirect function is not working
  68. How can I update the price when someone enters postcode or zip code in woocommerce checkout page?
  69. 400 bad request admin-ajax file upload
  70. get Woocommerce product format json for WP_Query
  71. Gutenberg blocks shortcodes compatibility
  72. Save custom field on WP_List_Table
  73. Load script and styles using an array of resources
  74. Update user meta when an external link in admin notice is clicked
  75. Is there an option to execute javascript file only on plugin activation
  76. How do I remove an action hook inside a class that is called by another class?
  77. The plugin generated 225 characters of unexpected output during activation
  78. Following/Followers Users list Using Ajax Pagination inside Author Profile
  79. Ajax in a class instantiated via shortcode
  80. Parsing webhook from Shopify in WordPress
  81. Shortcode Works for Logged in Users but Not Working for Guest
  82. Submit to itself don’t work
  83. WordPress / PhpStorm / XDebug and plugin_dir_path issues
  84. Send data from plugin to external database
  85. WordPress pagination broken on blog page, working for search results page
  86. See output of a sql query while plugin installation in wordpress
  87. Why this plugin is not working?
  88. Permission error on plugin save
  89. Trouble using wordpress functions in a pop-up modal form
  90. How to execute add_action() function from custom plugin to Crontrol plugin or do_action()?
  91. WordPress post pagination on custom template not working
  92. how can I make content from a plugin hidden when user is logged in? [duplicate]
  93. Infinite Scroll Plugin: How to first show 6 posts and then 2 posts thereafter with Infinite Scroll Plugin?
  94. base64_encode conflict with convert_smilies in wordpress
  95. Properly process a custom WP REST API request (Authenticate, Authorize + Validate)?
  96. Login user into magento using wordpress account
  97. getJSON response to PHP
  98. Custom plugin with shortcode not working
  99. Customize create table SQL statement in any WordPress plugin
  100. How can I modify the html output of a custom post type admin page?

Leave a Comment