JetEngine Format date string macro

format-date-string-macro.php

<?php

add_action( 'jet-engine/register-macros', function() { 

    /**
     * Format date string.
     */
    class Format_Date_String extends \Jet_Engine_Base_Macros {

        public function macros_tag() {
            return 'format_date_string';
        }

        public function macros_name() {
            return esc_html__( 'Format date string', 'jet-engine' );
        }

        public function macros_args() {
            return array(
                'format' => array(
                    'label'   => __( 'Format', 'jet-engine' ),
                    'type'    => 'text',
                    'default' => 'd.m.Y',
                ),
				'date_string' => array(
                    'label'   => __( 'Date string', 'jet-engine' ),
                    'type'    => 'text',
                    'default' => 'now',
                ),
                'show_by' => array(
                    'label'   => 'Show by:',
                    'type'    => 'select',
                    'options' => array(
                        'utc'    => 'UTC+0',
                        'server' => 'Server time'
                    ),
                    'default' => 'utc',
                ),
            );
        }

        public function macros_callback( $args = array() ) {

            $format      = $args['format'] ?? '';
            $date_string = $args['date_string'] ?? '';
            $show_by     = $args['show_by'] ?? 'utc';

            if ( ! $format || ! $date_string ) {
                return 'cannot format';
            }
            
            if ( $format === 'datetime' ) {
                $format = 'Y-m-d\TH:i';
            }
            
            if ( $show_by === 'utc' ) {
                $base_timestamp = null;
            } else {
                $base_timestamp = strtotime( 'now' ) + get_option( 'gmt_offset' ) * 3600;
            }
			
            $timestamp = strtotime( $date_string, $base_timestamp );
            
            $result = date( $format, $timestamp );
            
            return $result;
            
        }
    }
    
    new Format_Date_String();
    
} );