Рассчитать количество минут между двумя формами гравитации WP

Я работаю с WordPress и Gravity Forms. У меня есть два поля времени и одно поле нумерации. Числовое поле указывается в минутах и ​​должно быть числом минут между двумя значениями.

Пример:
Поле 1 (время): 3:20

Поле 2 (время): 4:20

Расчетное поле:
Поле 3 (количество минут между полем 1 и полем 3): 60

Я нашел что-то очень похожее, но это код для вычисления количества дней между двумя датами:

<?php
/**
* Gravity Wiz // Calculate Number of Days Between Two Gravity Form Date Fields
*
* Allows you to calculated the number of days between two Gravity Form date fields and populate that number into a
* field on your Gravity Form.
*
* @version   1.1
* @author    David Smith <[email protected]>
* @license   GPL-2.0+
* @link      https://gravitywiz.com/calculate-number-of-days-between-two-dates/
* @copyright 2013 Gravity Wiz
*/
class GWDayCount {
private static $script_output;
function __construct( $args ) {
extract( wp_parse_args( $args, array(
'form_id'          => false,
'start_field_id'   => false,
'end_field_id'     => false,
'count_field_id'   => false,
'include_end_date' => true,
) ) );
$this->form_id        = $form_id;
$this->start_field_id = $start_field_id;
$this->end_field_id   = $end_field_id;
$this->count_field_id = $count_field_id;
$this->count_adjust   = $include_end_date ? 1 : 0;
add_filter( "gform_pre_render_{$form_id}", array( &$this, 'load_form_script') );
add_action( "gform_pre_submission_{$form_id}", array( &$this, 'override_submitted_value') );
}
function load_form_script( $form ) {
// workaround to make this work for < 1.7
$this->form = $form;
add_filter( 'gform_init_scripts_footer', array( &$this, 'add_init_script' ) );
if( self::$script_output )
return $form;
?>

<script type="text/javascript">
(function($){
window.gwdc = function( options ) {
this.options = options;
this.startDateInput = $( '#input_' + this.options.formId + '_' + this.options.startFieldId );
this.endDateInput = $( '#input_' + this.options.formId + '_' + this.options.endFieldId );
this.countInput = $( '#input_' + this.options.formId + '_' + this.options.countFieldId );
this.init = function() {
var gwdc = this;
// add data for "format" for parsing date
gwdc.startDateInput.data( 'format', this.options.startDateFormat );
gwdc.endDateInput.data( 'format', this.options.endDateFormat );
gwdc.populateDayCount();
gwdc.startDateInput.change( function() {
gwdc.populateDayCount();
} );
gwdc.endDateInput.change( function() {
gwdc.populateDayCount();
} );
$( '#ui-datepicker-div' ).hide();
}
this.getDayCount = function() {
var startDate = this.parseDate( this.startDateInput.val(), this.startDateInput.data('format') )
var endDate = this.parseDate( this.endDateInput.val(), this.endDateInput.data('format') );
var dayCount = 0;
if( !this.isValidDate( startDate ) || !this.isValidDate( endDate ) )
return '';
if( startDate > endDate ) {
return 0;
} else {
var diff = endDate - startDate;
dayCount = diff / ( 60 * 60 * 24 * 1000 ); // secs * mins * hours * milliseconds
dayCount = Math.round( dayCount ) + this.options.countAdjust;
return dayCount;
}
}
this.parseDate = function( value, format ) {
if( !value )
return false;
format = format.split('_');
var dateFormat = format[0];
var separators = { slash: '/', dash: '-', dot: '.' };
var separator = format.length > 1 ? separators[format[1]] : separators.slash;
var dateArr = value.split(separator);
switch( dateFormat ) {
case 'mdy':
return new Date( dateArr[2], dateArr[0] - 1, dateArr[1] );
case 'dmy':
return new Date( dateArr[2], dateArr[1] - 1, dateArr[0] );
case 'ymd':
return new Date( dateArr[0], dateArr[1] - 1, dateArr[2] );
}
return false;
}
this.populateDayCount = function() {
this.countInput.val( this.getDayCount() ).change();
}
this.isValidDate = function( date ) {
return !isNaN( Date.parse( date ) );
}
this.init();
}
})(jQuery);
</script>

<?php
self::$script_output = true;
return $form;
}
function add_init_script( $return ) {
$start_field_format = false;
$end_field_format = false;
foreach( $this->form['fields'] as &$field ) {
if( $field['id'] == $this->start_field_id )
$start_field_format = $field['dateFormat'] ? $field['dateFormat'] : 'mdy';
if( $field['id'] == $this->end_field_id )
$end_field_format = $field['dateFormat'] ? $field['dateFormat'] : 'mdy';
}
$script = "new gwdc({
formId:             {$this->form['id']},
startFieldId:       {$this->start_field_id},
startDateFormat:    '$start_field_format',
endFieldId:         {$this->end_field_id},
endDateFormat:      '$end_field_format',
countFieldId:       {$this->count_field_id},
countAdjust:        {$this->count_adjust}
});";
$slug = implode( '_', array( 'gw_display_count', $this->start_field_id, $this->end_field_id, $this->count_field_id ) );
GFFormDisplay::add_init_script( $this->form['id'], $slug, GFFormDisplay::ON_PAGE_RENDER, $script );
// remove filter so init script is not output on subsequent forms
remove_filter( 'gform_init_scripts_footer', array( &$this, 'add_init_script' ) );
return $return;
}
function override_submitted_value( $form ) {
$start_date = false;
$end_date = false;
foreach( $form['fields'] as &$field ) {
if( $field['id'] == $this->start_field_id )
$start_date = self::parse_field_date( $field );
if( $field['id'] == $this->end_field_id )
$end_date = self::parse_field_date( $field );
}
if( $start_date > $end_date ) {
$day_count = 0;
} else {
$diff = $end_date - $start_date;
$day_count = $diff / ( 60 * 60 * 24 ); // secs * mins * hours
$day_count = round( $day_count ) + $this->count_adjust;
}
$_POST["input_{$this->count_field_id}"] = $day_count;
}
static function parse_field_date( $field ) {
$date_value = rgpost("input_{$field['id']}");
$date_format = empty( $field['dateFormat'] ) ? 'mdy' : esc_attr( $field['dateFormat'] );
$date_info = GFCommon::parse_date( $date_value, $date_format );
if( empty( $date_info ) )
return false;
return strtotime( "{$date_info['year']}-{$date_info['month']}-{$date_info['day']}" );
}
}
# Configuration
new GWDayCount( array(
'form_id'        => 16,
'start_field_id' => 1,
'end_field_id'   => 2,
'count_field_id' => 4
) );

Пока я пришел к этому, но у меня все еще есть проблемы с форматом даты:

class GWDayCount {
private static $script_output;
function __construct( $args ) {
extract( wp_parse_args( $args, array(
'form_id'          => false,
'start_field_id'   => false,
'end_field_id'     => false,
'count_field_id'   => false,
'include_end_date' => true,
) ) );
$this->form_id        = $form_id;
$this->start_field_id = $start_field_id;
$this->end_field_id   = $end_field_id;
$this->count_field_id = $count_field_id;
$this->count_adjust   = $include_end_date ? 1 : 0;
add_filter( "gform_pre_render_{$form_id}", array( &$this, 'load_form_script') );
add_action( "gform_pre_submission_{$form_id}", array( &$this, 'override_submitted_value') );
}
function load_form_script( $form ) {
// workaround to make this work for < 1.7
$this->form = $form;
add_filter( 'gform_init_scripts_footer', array( &$this, 'add_init_script' ) );
if( self::$script_output )
return $form;
?>

<script type="text/javascript">
(function($){
window.gwdc = function( options ) {
this.options = options;
this.startDateInput = $( '#input_' + this.options.formId + '_' + this.options.startFieldId );
this.endDateInput = $( '#input_' + this.options.formId + '_' + this.options.endFieldId );
this.countInput = $( '#input_' + this.options.formId + '_' + this.options.countFieldId );

startDateInput1 = $( '#input_' + this.options.formId + '_' + this.options.startFieldId );
endDateInput2 = $( '#input_' + this.options.formId + '_' + this.options.endFieldId );

this.init = function() {
var gwdc = this;
// add data for "format" for parsing date
gwdc.startDateInput.data( 'format', this.options.startDateFormat );
gwdc.endDateInput.data( 'format', this.options.endDateFormat );
gwdc.populateDayCount();
gwdc.startDateInput.change( function() {
gwdc.populateDayCount();
} );
gwdc.endDateInput.change( function() {
gwdc.populateDayCount();
} );
$( '#ui-datepicker-div' ).hide();
}
this.getDayCount = function() {
var startDate = this.parseDate( this.startDateInput.val(), this.startDateInput.data('format') )
min1 = startDateInput1;


var endDate = this.parseDate( this.endDateInput.val(), this.endDateInput.data('format') );


var dayCount = 0;
if( !this.isValidDate( startDate ) || !this.isValidDate( endDate ) )
return 'neki ni kul';
if( startDate > endDate ) {
return 0;
} else {
var diff = endDate - startDate;
dayCount = diff ;
var test = min1;
dayCount = Math.round( dayCount ) + this.options.countAdjust;
return test;
}
}

this.parseDate = function( value, format ) {
if( !value )
return false;
format = format.split('_');
var dateFormat = format[0];
var separators = { slash: ':', dash: '-', dot: '.' };
var separator = format.length > 1 ? separators[format[1]] : separators.slash;
var dateArr = value.split(separator);
switch( dateFormat ) {
case 'mdy':
return new Date( 0, dateArr[0] - 1, dateArr[1] );
case 'dmy':
return new Date( 0, dateArr[1] - 1, dateArr[0] );
case 'ymd':
return new Date( dateArr[0], dateArr[1] - 1, 0 );
}
return false;
}
this.populateDayCount = function() {
this.countInput.val( this.getDayCount() ).change();
}
this.isValidDate = function( date ) {
return !isNaN( Date.parse( date ) );
}
this.init();
}
})(jQuery);
</script>

<?php
self::$script_output = true;
return $form;
}
function add_init_script( $return ) {
$start_field_format = false;
$end_field_format = false;
foreach( $this->form['fields'] as &$field ) {
if( $field['id'] == $this->start_field_id )
$start_field_format = $field['dateFormat'] ? $field['dateFormat'] : 'mdy';
if( $field['id'] == $this->end_field_id )
$end_field_format = $field['dateFormat'] ? $field['dateFormat'] : 'mdy';
}
$script = "new gwdc({
formId:             {$this->form['id']},
startFieldId:       {$this->start_field_id},
startDateFormat:    '$start_field_format',
endFieldId:         {$this->end_field_id},
endDateFormat:      '$end_field_format',
countFieldId:       {$this->count_field_id},
countAdjust:        {$this->count_adjust}
});";
$slug = implode( '_', array( 'gw_display_count', $this->start_field_id, $this->end_field_id, $this->count_field_id ) );
GFFormDisplay::add_init_script( $this->form['id'], $slug, GFFormDisplay::ON_PAGE_RENDER, $script );
// remove filter so init script is not output on subsequent forms
remove_filter( 'gform_init_scripts_footer', array( &$this, 'add_init_script' ) );
return $return;
}
function override_submitted_value( $form ) {
$start_date = false;
$end_date = false;
foreach( $form['fields'] as &$field ) {
if( $field['id'] == $this->start_field_id )
$start_date = self::parse_field_date( $field );
if( $field['id'] == $this->end_field_id )
$end_date = self::parse_field_date( $field );
}
if( $start_date > $end_date ) {
$day_count = 0;
} else {
$diff = $end_date - $start_date;
$day_count = $diff; // secs * mins * hours
$day_count = round( $day_count ) + $this->count_adjust;
}
$_POST["input_{$this->count_field_id}"] = $day_count;
}
static function parse_field_date( $field ) {
$date_value = rgpost("input_{$field['id']}");
$date_format = empty( $field['dateFormat'] ) ? 'mdy' : esc_attr( $field['dateFormat'] );
$date_info = GFCommon::parse_date( $date_value, $date_format );
if( empty( $date_info ) )
return false;
return strtotime( "{$date_info['year']}-{$date_info['month']}-{$date_info['day']}" );
}
}