Example fields for ACF (simple, in PHP)

acf.fields.php

if ( function_exists( 'acf_add_local_field_group' ) ):
			acf_add_local_field_group( array(
				'key'      => 'key_name',
				'title'    => 'Title',
				'fields'   => array(
					array(
						'label'      => 'Group',
						'key'        => 'key',
						'name'       => 'name',
						'type'       => 'group',
						'layout'     => 'table',
						'sub_fields' => array(
							array(
								'label'      => 'Repeater',
								'key'        => 'repeater',
								'name'       => 'repeater',
								'type'       => 'repeater',
								'sub_fields' => array(
									array(
										'key'   => 'field',
										'label' => 'field',
										'name'  => 'field',
										'type'  => 'text'
									),
								),
							),
							array(
								'label'      => 'Repeater',
								'key'        => 'repeater',
								'name'       => 'repeater',
								'type'       => 'repeater',
								'sub_fields' => array(
									array(
										'key'   => 'field',
										'label' => 'field',
										'name'  => 'field',
										'type'  => 'text'
									),
								),
							)
						)
					),
					array(
						'key'   => 'field_name',
						'label' => 'field_label',
						'name'  => 'field_name',
						'type'  => 'type'
					),
				),
				'location' => array(
					array(
						array(
							'param'    => 'post_type',
							'operator' => '==',
							'value'    => 'post', // only post post type
						),
					),
				),
			) );
		endif;