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Source View: edit_form_advanced

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Line Code
2384
2385      /*
2386       * Some meta boxes hook into these actions to add hidden input fields in the classic post form. For backwards
2387       * compatibility, we can capture the output from these actions, and extract the hidden input fields.
2388       */
2389      ob_start();
2390      /** This filter is documented in wp-admin/edit-form-advanced.php */
2391      do_action( 'edit_form_after_title', $post );
2392      /** This filter is documented in wp-admin/edit-form-advanced.php */
2393      do_action( 'edit_form_advanced', $post );
2394      $classic_output = ob_get_clean();
2395
2396      $classic_elements = wp_html_split( $classic_output );
2397      $hidden_inputs    = '';
2398      foreach ( $classic_elements as $element ) {
2399           if ( 0 !== strpos( $element, '<input ' ) ) {
2400                continue;
2401           }
2402