Gravity Forms – UNIX Timestamp

Written by Bill EricksonPublished on January 17, 2012Updated on December 5, 2018

	<?php

	add_action( 'gform_post_submission_1', 'be_event_timestamp', 10, 2 );
	/**
	* Create a UNIX timestamp based on Gform date fields
	* @author Bill Erickson
	* @link http://www.billerickson.net/code/gravity-forms-unix-timestamp
	* @link http://www.gravityhelp.com/documentation/page/Gform_post_submission
	*
	* 'gform_post_submission' applies to all forms, append form ID to specify
	*
	* @param array $entry
	* @param array $form
	* @return array
	*/
	function be_event_timestamp( $entry, $form ) {
	$start_date = get_post_meta( $entry['post_id'], 'be_event_start_date', true );
	if( $start_date ) {
	$timestamp = strtotime( $start_date );
	update_post_meta( $entry['post_id'], 'be_event_start_date_unix', $timestamp );
	}

	$end_date = get_post_meta( $entry['post_id'], 'be_event_end_date', true );
	if( $end_date ) {
	$timestamp = strtotime( $end_date );
	update_post_meta( $entry['post_id'], 'be_event_end_date_unix', $timestamp );
	}
	}