Allow the execution of an external PHP script for logged users

I would do this the other way around:

if ( !is_user_logged_in () ) {
  //the script exits if the user is not logged in
  require('/path/to/your/script.php');
  showAccessDenied($day, $month, $year, $area, isset($room) ? $room : "");
}

You can work that into a page in a number of ways. I don’t have enough detail to provide an example that fits your needs.

Related Posts:

  1. What is the correct way to use WordPress functions outside WordPress files?
  2. there’s a way to include a minimal WP for check only the current user, its roles (caps?) and then release/free it?
  3. Call to undefined function wp() in wp-blog-header.php
  4. How to call WordPress PHP file using external js file
  5. Is the first item returned by get_posts() always the latest post?
  6. Combine CSS and JS files from plugins
  7. How to target with css, admin elements according to user role level?
  8. remove tags from posts in php
  9. Separate WordPress themes for each category page
  10. Getting key value of WP_Term object in wordpress
  11. Showing user ID on user main page from screen options
  12. Delete post revisions on post publish
  13. Using Cookie Data For WP_Query Loop
  14. how to add display_name from the users table to this query
  15. Why when I instantiate wp_error in a validation method my user registration method stops working?
  16. How do I list the_tags() into HTML data-attribute
  17. WP Insert Post function – Insert Post Thumbnail
  18. get_usermeta() deprecated in favor of get_user_meta(). But why doesn’t it make use of it?
  19. How can I hide Home in my menu in a specific page?
  20. Anyway to output the registration form like the login form with wp_login_form()?
  21. Setting a cookie upon specific URL visit
  22. WordPress custom slug (endpoint) and compare all links
  23. Only show search results with if current date is between two dates?
  24. Remove duplicates – array_unique()
  25. database interactions using OOP
  26. get_term_link() returns correct – But illogical error-messages disturb
  27. prevent default not stopping page refresh. Passing form information to and from php with ajax in a wordpress site
  28. Capture User Email Address When Filling Out Form
  29. Execute long and heavy processes
  30. get_posts() and WP_query limits ‘AND’ conditions to a maximum of 6 for meta value queries in WordPress
  31. How to modify a global variable in a function and use it on another function?
  32. How to send get request to file.php right and where to store that file.php?
  33. Display parent and child taxonomies in separate drop down select fields
  34. PHP echoes value without the use of echo
  35. Get URL from shortcode tag
  36. How can i show post_class() within output loop?
  37. How to remove ?p= from wordpress short links
  38. Hide image if taxonomy term is empty
  39. Could use some help with Shortcodes
  40. Use custom template on custom post type
  41. Do I always need to call wp_get_current_user() before accessing $current_user?
  42. How to make function appear in sentence?
  43. Save html content of a widget textarea
  44. Widgets not showing on custom theme
  45. How to define a variable already defined in a plugin function?
  46. Custom query vars filters problem with pagination
  47. How do I access post_meta key with php?
  48. How to modify mobile nav menu text in theme
  49. How to use AJAX in WordPress in MYSQL query?
  50. Use SCSSPHP to compile Theme Customizer Values into .SCSS files ready to compile to CSS
  51. php return username of currently viewed author profile
  52. Update value of a associative array with update_post_meta
  53. feedburner plugin for WP 3.5
  54. Redirect to current user page upon link click
  55. Adding wp_list_categories to a specific div that was appended using jQuery
  56. WordPress custom post type and taxonomy
  57. PHP code snippet to remove microdata
  58. Search AJAX Filters – Multiple Query Loops Into One Loop (Optimization)
  59. WP_Query: How to get results from both meta_key options?
  60. how to dynamically remove all edit and delete functionality of a page
  61. Generate a QR code when creating a new WordPress user
  62. Passing in MySQL prepare statement parameter separately throwing error
  63. I want to fusion the product columns in email table order
  64. wordpress email checker on domain
  65. Critical error on your site
  66. posts_per_page displays only 2 posts instead of 4 posts
  67. Using wp_editor() when not logged stopped working
  68. Paged WP_Query is quitting on page 3
  69. Need help with format of nested array in MySQL
  70. How to add delete, approve, spam Links to Comments
  71. Adding user meta to post meta wp_insert_post() not working
  72. PHP: Why does my code work in index.php but not a widget?
  73. searching for members in wordpress
  74. Edit Post custom options not working
  75. jQuery doesn’t work in my php snippet
  76. How can I remove these resize lines from the comment box?
  77. Rearrange get_categories array compared to another array
  78. Changing code to remove 2 records for the first line
  79. use system script advertising in wordpress multisite
  80. “Where… like” query not working as expected
  81. Why isn’t my custom function kicking in from my functions.php file?
  82. Shortcoding with Divs
  83. Reusing the page name class that WordPress adds to body tag
  84. Custom Links in Walker Class
  85. How to include support for all page types, calendar urls, archive, etc
  86. Integrating CSS Into a WP Function Call [closed]
  87. WordPress menu links with images & class selection
  88. Use php array outside his function
  89. How do I remove blog entries from home page Twenty Eleven child theme?
  90. PHP 7.3 is required for WordPress 5.2 or Recommendation
  91. how to get image url from meta value?
  92. Show wrapper divs if query has results, then loop the results [closed]
  93. How make wp_nav() with my css?
  94. How to align buttons properly [closed]
  95. index.php file keeps redirecting to a non-existent index.html file?
  96. How to pass parameter to another url?
  97. HTTP 500 Error after Creating Shortcode
  98. Show button in header when product custom field is not empty
  99. WordPress PHP8 Critical Error in class-wp-widget.php
  100. How to get the last date updated of postmeta?
error code: 523