Colophon section which can be edited in WordPress customizer (GeneratePress child-theme)

functions.php

<?php // colophon section which can be edited in WordPress customizer (GeneratePress child-theme)
add_action( 'customize_register', function( $wp_customize ) {

  $wp_customize->add_section( 'fia_colophon_section', array(
    'title'    => __( 'Colofon Informatie', 'fia-theme' ),
    'priority' => 120,
  ) );

  // Velden configuratie
  $fields = array(
    'colophon_social_link' => 'Social Media URL',
    'colophon_address'     => 'Adres',
    'colophon_phone'       => 'Telefoonnummer',
    'colophon_hours'       => 'Openingstijden',
  );

  foreach ( $fields as $id => $label ) {
    $wp_customize->add_setting( $id, array(
      'default'   => '',
      'transport' => 'refresh',
    ) );

    $wp_customize->add_control( $id, array(
      'label'    => $label,
      'section'  => 'fia_colophon_section',
      'type'     => ( $id === 'colophon_address' ) ? 'textarea' : 'text',
    ) );
  }
} );
add_action( 'generate_before_footer', function() {
  $social_url = get_theme_mod( 'colophon_social_link' );
  $address    = get_theme_mod( 'colophon_address' );
  $phone      = get_theme_mod( 'colophon_phone' );
  $hours      = get_theme_mod( 'colophon_hours' );

  // Alleen tonen als er minstens één veld is ingevuld
  if ( $social_url || $address || $phone || $hours ) {
    ?>
    <section class="custom-colophon">
      <div class="grid-container">
        <ul class="colophon-list">
          <?php if ( $social_url ) : ?>
          <li><a href="<?php echo esc_url( $social_url ); ?>" target="_blank" rel="noopener">Social Media</a></li>
          <?php endif; ?>

          <?php if ( $address ) : ?>
          <li><?php echo wp_kses_post( $address ); ?></li>
          <?php endif; ?>

          <?php if ( $phone ) : ?>
          <li><a href="tel:<?php echo esc_attr( str_replace(' ', '', $phone) ); ?>"><?php echo esc_html( $phone ); ?></a></li>
          <?php endif; ?>

          <?php if ( $hours ) : ?>
          <li><?php echo esc_html( $hours ); ?></li>
          <?php endif; ?>
        </ul>
      </div>
    </section>
    <?php
    }
    } );