Custom Registration Fields

/**

 * Add fields to the registration form.

 *

 * @param  array $fields

 * @return array

 */

add_filter(

	'charitable_user_registration_fields',

	function( $fields ) {

		/* Add a text field. */

		$fields['text_field'] = [

			'type'      => 'text',

			'label'     => 'My Text Field',

			'priority'  => 10,

			'required'  => false,

			'value'     => isset( $_POST['text_field'] ) ? $_POST['text_field'] : '',

		];

		/* Add a checkbox. */

		$fields['checkbox_field'] = [

			'type'      => 'checkbox',

			'label'     => 'My Checkbox Field',

			'priority'  => 12,

			'required'  => false,

			'checked'   => isset( $_POST['checkbox_field'] ) && $_POST['checkbox_field'],

		];

		/* Add a checkbox. */

		$fields['select_field'] = [

			'type'      => 'select',

			'label'     => 'My Select Field',

			'priority'  => 14,

			'required'  => false,

			'value'     => isset( $_POST['select_field'] ) ? $_POST['select_field'] : '',

			'options'   => [

				'option_1' => 'Option 1',

				'option_2' => 'Option 2',

			],

		];

		return $fields;

	}

);