allowed-markup-for-wpkses.php

<?php	

/**
 * Create global vaiable for accepted HTML tags in ACF fields.
 *
 * To be used with wp_kses. Example:
 * wp_kses( get_field( 'field' ), ll_allowed_markup() );
 *
 * @link https://codex.wordpress.org/Function_Reference/wp_kses
 */

function ll_allowed_markup() {
  
  $allowed_markup = array(
                    'a' => array(
                      'href' => array(),
                      'title' => array()
                    ),
                    'br' => array(),
                    'em' => array(),
                    'strong' => array(),
                    'span' => array(),
                  );
  
  return $allowed_markup;

}