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Source View: edit_form_advanced

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Line Code
2373
2374      /*
2375       * Some meta boxes hook into these actions to add hidden input fields in the classic post form. For backwards
2376       * compatibility, we can capture the output from these actions, and extract the hidden input fields.
2377       */
2378      ob_start();
2379      /** This filter is documented in wp-admin/edit-form-advanced.php */
2380      do_action( 'edit_form_after_title', $post );
2381      /** This filter is documented in wp-admin/edit-form-advanced.php */
2382      do_action( 'edit_form_advanced', $post );
2383      $classic_output = ob_get_clean();
2384
2385      $classic_elements = wp_html_split( $classic_output );
2386      $hidden_inputs    = '';
2387      foreach ( $classic_elements as $element ) {
2388           if ( 0 !== strpos( $element, '<input ' ) ) {
2389                continue;
2390           }
2391