How to prevent double execution of do_action statements

To check if someone already hooked into myhook1

if( 0 >= did_action( 'myhook1' ) )
  do_action( 'myhook1', 'myfunction1' );

If you want to check if the function myfunction1 was already called (maybe by a simple function call), you have to set a ‘marker’

function myfunction1 ( $some_args ) {

// with a simple global define (a bad solution)
  define( 'MYFUNCTION1_DONE', TRUE );

// or with the globals array (also a bad solution)

  $myfunction_calls = isset( $GLOBALS['myfunction_calls'] ) ?
    $GLOBALS['myfunction_calls'] : array();
  if( ! is_array( $myfunction_calls ) )
    $myfunction_calls = array();

  $myfunction_calls[__FUNCTION__] = TRUE;
  $GLOBALS['myfunction_calls'] = $myfunction_calls;

// or with database
//
// you have to reset the database entry everytime the script ends
// this is can be done by add_action( 'shutdown', 'reset_myfunctioncalls_db_entry' );
// or in a class with a __destruct() method
  $myfunction_calls = get_option( 'myfunction_calls', TRUE );
  if( ! is_array( $myfunction_calls ) )
    $myfunction_calls = array();

  $myfunction_calls[__FUNCTION__] = TRUE;
  upodate_option( 'myfunction_calls', $myfunctions );

[... some other code ...]
}

Before you call do_action(), you can check if the function was already called

if( ! defined( 'MYFUNCTION1_DONE' ) || TRUE !== MYFUNCTION1_DONE )
  do_action( 'myhook1', 'myfunction1' );

// or
$myfunction_calls = isset( $GLOBALS['myfunction_calls'] ) ?
  $GLOBALS['myfunction_calls'] : array();

if( ! isset( $myfunction_calls['myfunction1'] ) || TRUE !== $myfunction_calls['myfunction1'] )
  do_action( 'myhook1', 'myfunction1' );

// or
$myfunction_calls = get_option( 'myfunction_calls', TRUE );

if( ! isset( $myfunction_calls['myfunction1'] ) || TRUE !== $myfunction_calls['myfunction1'] )
  do_action( 'myhook1', 'myfunction1' );

Related Posts:

  1. How to hook update_post_meta and delete_post_meta?
  2. Are there any hooks that alter the 404 logic?
  3. WooCommerce: change display order of product short description and price [closed]
  4. How to remove action hook done in a plugin from functions.php in my theme?
  5. Hooks for trashing, deleting, saving, restoring custom post type
  6. Is there a WordPress core & plugins update action hook?
  7. trigger save_post event programmatically
  8. Hook into wp_head(); in a plugin
  9. is it possible to get the hook name in add_action?
  10. What hook is executed just after wp_query has been executed?
  11. Use $query->set multiple times with pre_get_posts?
  12. How can I hook into the post editor title field in order to change the HTML?
  13. How to properly test a method that is called by an action hook
  14. How can I do customizations on login, registration and password recovery forms?
  15. WordPress v5.0.3 Gutenberg & JS error “Uncaught SyntaxError: missing ) after argument list”
  16. Searching hook to set cookies before and avoid “headers already sent”
  17. Custom form action hook
  18. Hook before inserting user into database [duplicate]
  19. How to send an automated user ‘inactivity’ email?
  20. wp_redirect() not working on form submission with init hook
  21. How do I successfully create a hook for an email override?
  22. Cast string to number
  23. How to debug user_register hook
  24. Storing state between hook functions
  25. How to hook into Add New Member in BuddyPress
  26. Using wp_editor tinyMCE in metabox cause form alert on leaving page
  27. How to exclude a list of specific category in category widget in new post admin screen?
  28. Method to find a hook
  29. Hook when new CPT published AND postmeta inserted
  30. Need to check is_archive during init
  31. When WP_CLI runs WordPress from the command line, are hooks called?
  32. Executing Arbitrary Code at a Specific URL without Creating a Post or Page?
  33. Query categories that have a description
  34. customize_controls_enqueue_scripts doesn’t fire from within my plugin
  35. Save User Meta Email Address in Lowercase
  36. Trying to run a compile command while saving post
  37. Execute JavaScript in WordPress Hook
  38. How to cancel the trash action inside wp_trash_post
  39. Action hook for custom tax edit
  40. wp cron job fires at every second or so, if callback is wrapped with DOING_CRON check it never fires at all
  41. What is the difference between add_action and add_filter [duplicate]
  42. load-* hook for dashboard
  43. I don’t understand how add_action and do_action work in tandem. The former executes the code already…what is do_action for?
  44. Insert HTML in post, below nav bar but above content?
  45. Convert Gravity Form Entry Date on Export
  46. Hook Adding content after title
  47. Fatal error: Call to a member function get_queried_object_id()
  48. Use an array of page template slugs and $hook
  49. “admin_enqueue_scripts” hook or $_GET[‘page’]?
  50. post.php AJAX request not being called when publishing post
  51. How to add content to suscriptor dashboard frontend?
  52. Add PHP code to header section from plugin
  53. How to change a WordPress term’s slug before saving
  54. dynamic add_action according to child pages (for homepage control)
  55. Remove action in a parent theme from the child theme
  56. Remove action within a class in a parent theme’s includes folder from the child theme
  57. Action hook save_post for newly created posts – $post object data is all empty
  58. add_filter to the_content from plugin function
  59. What hook do I use if I want to update a user profile field when a new user is created?
  60. How to add custom tab page in backend?
  61. Add html code in admin page
  62. What hook should I use that will fire whenever I open a post for editing in the WP back-end?
  63. Can not using get_header() cause trouble (later on)?
  64. Is there a author_update action?
  65. How to set Media Box form elements default value?
  66. How to get product information using hooks?
  67. How to read and write session data?
  68. Print additional fields in wp_new_user_notification_email_admin
  69. Add content in cpt archive page
  70. Creating custom post on registration in wordpress?
  71. Display custom user profile fields in wordpress
  72. profile_update not supplying old data
  73. remove_action not working for a function
  74. Is there no concise way, a library maybe, to help with unhooking class functions and so on?
  75. Debug a WP install: how to find which functions write post updates during a process (a woocommerce checkout in my case)
  76. What hook should I use to add post meta data with on update?
  77. Problem with call_user_func_array front end
  78. How to I prevent WordPress from switching external HTTP links to HTTPS?
  79. Stylesheet is getting removed/deregistered automatically
  80. How to override get_avatar() function?
  81. add extra parameter in default hook in wordpress
  82. Change user role if it’s orders count more than
  83. Hook triggered twice in a Woocommerce single product page
  84. set_post_format called after wp_update_post when using bulk edit?
  85. Using actions, hooks and filters in a non-WordPress page
  86. Hook into create_category
  87. Trouble adding data to options table
  88. How to hook into publish_posttype?
  89. Fire a hook programmatically
  90. How do I override the user’s input when updating a custom post type’s permalink?
  91. How to add a new link to the default register form’s footer links?
  92. $GLOBALS & global doesn’t work [closed]
  93. Hooks not working on live server
  94. Do New_to_publish hooks work for custom post types
  95. Creating my own “recent blog posts” static Gutenberg block, can’t use react hooks in the frontend
  96. How do I set a custom post type Category after import using wp_set_post_terms
  97. How can I get the ID before after_setup_theme?
  98. Hook on opening a media/document
  99. Hooks to trigger a callback when adding, removing, rearranging or updating a widget in the widget area
  100. Why does before_delete_post run when opening a post in the backend?