Check if event was scheduled – schedule event only once

Have you ever heard of Rubber Ducking?

The official documentation has an answer:

if ( ! wp_next_scheduled( 'woofio_hourly' ) ) {
    wp_schedule_event( time(), 'hourly', 'woofio_hourly' );
}

Related Posts:

  1. Do WordPress cron jobs slow down page loading?
  2. WordPress cron isn’t scheduled on amazon web services
  3. Get frequency of scheduled event
  4. crontab wp-cron.php on multisite path-based network: one for each path? Or just one for the root?
  5. Running wp-cron from CLI
  6. Why?: hundreds of empty files named wp-cron.php?doing_wp_cron.
  7. Can’t access wp_filesystem in cron function
  8. WP CRON runs only the first time
  9. Create function in functions.php with hook name to execute URL
  10. cron.php being constantly deleted [closed]
  11. Scheduling posts on wordpress adds wrong seconds as post_date
  12. wp_schedule_event run in background or not?
  13. Detect if Cron is Running
  14. Run function with linux cron job in WordPress
  15. Schedule cron don’t work
  16. Cron schedule not updating after run
  17. Can you register two cron events in a single function?
  18. When to use wp_schedule_single_event for async / non-blocking processes?
  19. Issues When Recursively Calling wp_schedule_single_event()
  20. wp-cron behaviour when there are multiple queued tasks
  21. System Cron job not firing
  22. WordPress Cron Job Not working
  23. WordPress automatic publish: is there a timeout when WordPress won’t publish anymore?
  24. Cron job not working – Can’t see in the queue attached
  25. “Missed schedule” posting bug
  26. How to force ‘cron_schedules’ every minute instead 1 hour?
  27. Cancel/Stop a currently ongoing scheduled cron event?
  28. Code does not work in class implementation but works fine in functions.php file
  29. Use cron to create a non blocking task
  30. How to create and run cronjob in WP without using the plugin?
  31. Cron job to run just once per day using external cron service
  32. Manually running cron from the server
  33. Cron jobs when running multiple instances on the same DB
  34. Scheduling WP cron jobs
  35. WordPress Cron job, 302 response
  36. How can I prove if wp cron is running my task if I have DISABLE_WP_CRON set to true
  37. Time limit on long cron job?
  38. Strange cron job behavior and how to solve it?
  39. WordPress cron not getting executed when called by external service (but ok from browser)
  40. Cron and request with wp_remote_post
  41. How to Set a Condition via Page Template Name in WP Cron Job?
  42. Real cron killed my cron system. Only define( ‘ALTERNATE_WP_CRON’, true ); works
  43. Server cron job not working
  44. Most efficient way to trigger wp-cron through system cron.
  45. How to make sure WP-CRON job loops through all posts?
  46. Run external file cron using WordPress Scheduler
  47. Huge cron option_value into wp_options table
  48. setting up a wp cron job
  49. Pages for Cron use Only?
  50. Cron jobs repeating themselves
  51. Does DISABLE_WP_CRON prevent plugins from registering new cron tasks?
  52. Cron event running more than once if triggered from WP Crontrol
  53. How to know if WP cron is currently running my hook?
  54. Cronjob function not executed – negative seconds
  55. WP CRON Fails At 13:00 Every Day
  56. Update last created post in custom post types with wp_cron()?
  57. Custom cronjob not executing at all, but manually
  58. ‘wp_site_health_scheduled_check’ Causes Failure Of Other Scripts
  59. Having difficulties with WP cron
  60. Action to create custom field based on shipping class works when manually triggered, but not on cron schedule
  61. What are scheduled callbacks?
  62. WP Cron, how to speed it up
  63. What is the correct way to implement wp-cron server-side in Kubernetes?
  64. Should I disable WP_CRON and trigger wp-cron.php from the server?
  65. “Could not open input file: wp-cron.php?import_key=” in shell?
  66. WP-Cron missing tasks after moving to server job
  67. WP Cron is not running
  68. I have a wordpress store with woocomerce and it goes into maintenance every 12 hours
  69. Is there a quick way to view the wp-cron schedule
  70. How to test wp_cron?
  71. Running WP Cron on multisite the right way
  72. WP Cron Doesn’t Execute When Time Elapses
  73. Should I disable WP_CRON and instead trigger wp-cron.php from server every few mins?
  74. PHP Warning on fresh install (Connection timed out)
  75. Is there a known vulnerability for wp-cron.php?
  76. Uncaught Error: Call to undefined function wp_generate_attachment_metadata() @ wp-cron
  77. Using wp_schedule_single_event with arguments to send email
  78. Running WordPress on the Command Line – Turn off Delayed Output?
  79. Schedule WordPress Auto-Updates to only run during business hours
  80. wp_schedule_event is executing but the function related to the hook is not running
  81. How is WP Cron Locking implemented?
  82. How to use wp_schedule_event in a class?
  83. wp_schedule_event won’t accept args
  84. add_action to wp cron?
  85. Triggering cron by calling wp-cron.php on the command line rather than with wget?
  86. Better handling of WP-CRON server load abuse
  87. When does next Cron Job run (time from now)?
  88. Run WP Cron Weekly (but on a certain day)
  89. wp-cron.php is triggered, but scheduled post is not published
  90. wp_schedule_event() on specific time, daily
  91. Need to execute a cron job
  92. wp_next_scheduled returning a past timestamp
  93. run a cron task without obstructing page load?
  94. Recurring scheduled task help
  95. Missed scheduled WordPress
  96. What happens when wp_cron is deactivated in WordPress?
  97. How to make wp cron job not fire immediately?
  98. How Do I Make WordPress Run an Event Every Day?
  99. get_posts inside cron
  100. Do wp-cron scheduled tasks run asynchronously?
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)