Edit Divi Footer plugin

edit-divi-footer.php

<?php
/*
Plugin Name: Edit Divi Footer
Plugin URI:  https://oikos.digital/toolbox/oikos-plugins/edit-divi-footer/
Description: Adds customizer options for editing the Divi footer text
Version:     1.0
Author:      Ross Wintle/Oikos
Author URI:  https://oikos.digital/
 */

if (! function_exists('edf_footer_text')) {

  add_filter('gettext', 'edf_footer_text', 10, 3);
  function edf_footer_text( $translated_text, $original_text, $domain ) {
    $new_text = $translated_text;    
    if ('Designed by %1$s | Powered by %2$s' == $original_text) {
      $edf_value = get_option('edf_footer_text');
      if (!empty($edf_value)) {
        $new_text = $edf_value;
      }
    }
    return $new_text;
  }
}

if (! function_exists('edf_footer_options')) {
  add_action('customize_register', 'edf_footer_options', 100, 1);
  function edf_footer_options( $wp_customize ) {
    $wp_customize->add_setting( 'edf_footer_text' , array(
      'default'     => '',
      'transport'   => 'refresh',
      'type'        => 'option',
    ) );

    $wp_customize->add_control( new WP_Customize_Control( $wp_customize, 'edf_footer_text', array(
      'label'        => __( 'Footer text', 'edf' ),
      'section'    => 'et_divi_footer_elements',
      'settings'   => 'edf_footer_text',
    ) ) );
  }
}