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Source View: edit_form_advanced

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Line Code
2426
2427      /*
2428       * Some meta boxes hook into these actions to add hidden input fields in the classic post form. For backwards
2429       * compatibility, we can capture the output from these actions, and extract the hidden input fields.
2430       */
2431      ob_start();
2432      /** This filter is documented in wp-admin/edit-form-advanced.php */
2433      do_action( 'edit_form_after_title', $post );
2434      /** This filter is documented in wp-admin/edit-form-advanced.php */
2435      do_action( 'edit_form_advanced', $post );
2436      $classic_output = ob_get_clean();
2437
2438      $classic_elements = wp_html_split( $classic_output );
2439      $hidden_inputs    = '';
2440      foreach ( $classic_elements as $element ) {
2441           if ( 0 !== strpos( $element, '<input ' ) ) {
2442                continue;
2443           }
2444