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Source View: edit_form_advanced

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Line Code
2406
2407      /*
2408       * Some meta boxes hook into these actions to add hidden input fields in the classic post form. For backwards
2409       * compatibility, we can capture the output from these actions, and extract the hidden input fields.
2410       */
2411      ob_start();
2412      /** This filter is documented in wp-admin/edit-form-advanced.php */
2413      do_action( 'edit_form_after_title', $post );
2414      /** This filter is documented in wp-admin/edit-form-advanced.php */
2415      do_action( 'edit_form_advanced', $post );
2416      $classic_output = ob_get_clean();
2417
2418      $classic_elements = wp_html_split( $classic_output );
2419      $hidden_inputs    = '';
2420      foreach ( $classic_elements as $element ) {
2421           if ( 0 !== strpos( $element, '<input ' ) ) {
2422                continue;
2423           }
2424