Post to WebHook on event booking/registration for eventsmanagerpro WP

functions.php

function my_offline_auto_approve_filter( $result, $EM_Booking ){
	$event = [
		'eventname'			=>	$EM_Booking->event->event_name,
		'event_id'			=>	$EM_Booking->event->event_id,
		'post_id'			=>	$EM_Booking->event->post_id,
		'post_content'		=>	$EM_Booking->event->post_content,
		'start_time'		=>	$EM_Booking->event->start_time,
		'start_date'		=>	$EM_Booking->event->start_date,
		'end_date'			=>	$EM_Booking->event->end_date,
		'end_time'			=>	$EM_Booking->event->end_time,
		'booking_id'		=>	$EM_Booking->id
	];
 	$fields	= [
		"BookInginfo"	=> 	$EM_Booking->booking_meta,
		"Event"			=>  $event
		//"LastName"		=> 	$EM_Booking->booking_meta->registration->last_name
	]; 
	$data_string =  json_encode($fields);

		$ch = curl_init('https://hooks.zapier.com/hooks/catch/xxxx/xxxx/');                                                                      
		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                                                                     
		curl_setopt($ch, CURLOPT_POSTFIELDS,$data_string);                                                                  
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);                                                                      
		curl_setopt($ch, CURLOPT_HTTPHEADER, array(                                                                          
			'Content-Type: application/json',                                                                                
			'Content-Length: ' . strlen($data_string))                                                                       
		);                                                                                                                   
	$result = curl_exec($ch);
	//curl_close($ch);
	//exit();
	return $result;
}
add_filter('em_booking_save', 'my_offline_auto_approve_filter', 100, 2);