How does PHP Event Calendar prevent double booking? It automatically checks your calendars and prevents overlap/double booking anytime when users submit an event. If an event start, end date and time clashes with any other events in the same calendar, a warning message will display. Users can decide whether to proceed or modify the event to avoid double booking.


  • Automatically checks event overlap to prevent double-booking
  • Options to display warning message only, or prohibit double-booking completely
  • Customizable warning message

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