Lines:

network_edit_site_nav(
  array(
    'blog_id'  => $id,
    'selected' => 'site-settings',
  )
);

if ( ! empty( $messages ) ) {
  foreach ( $messages as $msg ) {
    echo '<div id="message" class="updated notice is-dismissible"><p>' . $msg . '</p></div>';
  }
}
?>
<form method="post" action="site-settings.php?action=update-site">
	<?php wp_nonce_field( 'edit-site' ); ?>
	<input type="hidden" name="id" value="<?php echo esc_attr( $id ); ?>" />
	<table class="form-table" role="presentation">
		<?php
    $blog_prefix = $wpdb->get_blog_prefix( $id );
    $sql         = "SELECT * FROM {$blog_prefix}options
			WHERE option_name NOT LIKE %s
			AND option_name NOT LIKE %s";
    $query       = $wpdb->prepare(
      $sql,
      $wpdb->esc_like( '_' ) . '%',
      '%' . $wpdb->esc_like( 'user_roles' )
    );
    $options     = $wpdb->get_results( $query );

    foreach ( $options as $option ) {
      if ( 'default_role' === $option->option_name ) {
        $editblog_default_role = $option->option_value;
      }

      $disabled = false;
      $class    = 'all-options';

      if ( is_serialized( $option->option_value ) ) {
        if ( is_serialized_string( $option->option_value ) ) {
          $option->option_value = esc_html( maybe_unserialize( $option->option_value ) );
        } else {
          $option->option_value = 'SERIALIZED DATA';
          $disabled             = true;
          $class                = 'all-options disabled';
        }
      }

      if ( strpos( $option->option_value, "\n" ) !== false ) {
        ?>
				<tr class="form-field">
					<th scope="row"><label for="<?php echo esc_attr( $option->option_name ); ?>"><?php echo ucwords( str_replace( '_', ' ', $option->option_name ) ); ?></label></th>
					<td><textarea class="<?php echo $class; ?>" rows="5" cols="40" name="option[<?php echo esc_attr( $option->option_name ); ?>]" id="<?php echo esc_attr( $option->option_name ); ?>"<?php disabled( $disabled ); ?>><?php echo esc_textarea( $option->option_value ); ?></textarea></td>
				</tr>
				<?php
      } else {
        ?>
				<tr class="form-field">
					<th scope="row"><label for="<?php echo esc_attr( $option->option_name ); ?>"><?php echo esc_html( ucwords( str_replace( '_', ' ', $option->option_name ) ) ); ?></label></th>
					<?php if ( $is_main_site && in_array( $option->option_name, array( 'siteurl', 'home' ), true ) ) { ?>
					<td><code><?php echo esc_html( $option->option_value ); ?></code></td>
					<?php } else { ?>
					<td><input class="<?php echo $class; ?>" name="option[<?php echo esc_attr( $option->option_name ); ?>]" type="text" id="<?php echo esc_attr( $option->option_name ); ?>" value="<?php echo esc_attr( $option->option_value ); ?>" size="40" <?php disabled( $disabled ); ?> /></td>
					<?php } ?>
				</tr>
				<?php
      }
    } // End foreach.

    
/**
 * Fires at the end of the Edit Site form, before the submit button.
 *
 * @since 3.0.0
 *
 * @param int $id Site ID.
 */
    do_action( 'wpmueditblogaction', $id );
    ?>
	</table>
	<?php submit_button(); ?>
</form>

</div>
<?php
require_once ABSPATH . 'wp-admin/admin-footer.php';
 

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