Add a Register Field TextArea field type which limits the number of characters Members can fill in

my_pmpro_custom_fields_character_limit.php

<?php

/**
 * See the PMPro Register Helper readme for more information and examples: https://www.paidmembershipspro.com/documentation/register-helper-documentation/adding-fields/
 * Please add the below code to your custom plugin or Code Snippets Plugin by following this guide - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

// We have to put everything in a function called on init, so we are sure Register Helper is loaded.
// Define the fields.

	function my_pmprorh_init() {
	//don't break if Register Helper is not loaded
		if(!function_exists( "pmprorh_add_registration_field" )) {
			return false;
	}
	
	$fields = array();
	
  $fields[] = new PMProRH_Field(
		'samplefield', // input name, will also be used as meta key
		'textarea', // type of field
			array(
			'label' => 'Type in your Memo', // custom field label to be displayed on the frontend
			'profile' => true,              // show in front-end member profile
			'memberslistcsv' => false,      // add to export CSV file from Members List or not
			'rows' => 3,                    // number of rows
			'html_attributes' => array( 'maxlength' => '200'), // input the number of characters you want members to be able to type in
		//	'html_attributes' => array( 'minlength' => '20'), // Set a max character limit or a minimun character limit
		)
	);
	
	// Add the fields into a new checkout_boxes are of the checkout page.
	foreach ( $fields as $field ) {
		pmprorh_add_registration_field(
			'checkout_boxes',	// location on checkout page
			$field			// PMProRH_Field object
				);
    
 // That's it. See the PMPro Register Helper readme for more information and examples.
	}}
add_action( 'init', 'my_pmprorh_init','pmprorh_add_registration_field');