lyblog/wp-content/plugins/wordpress-seo/admin/views/form/fieldset.php

<?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Admin
 *
 * @uses string $id                ID attribute for the fieldset.
 * @uses string $attributes        Additional attributes for the fieldset.
 * @uses string $legend_attributes Additional attributes for the legend.
 * @uses string $legend_content    The legend text.
 * @uses string $content           The fieldset content, i.e. a set of logically grouped form controls.
 */

_deprecated_file( __FILE__, '11.9' );

if ( ! defined( 'WPSEO_VERSION' ) ) {
	header( 'Status: 403 Forbidden' );
	header( 'HTTP/1.1 403 Forbidden' );
	exit();
}

?>

<fieldset id="<?php echo esc_attr( $id ); ?>"<?php echo $attributes; ?>>
	<legend id="<?php echo esc_attr( $id . '-legend' ); ?>"<?php echo $legend_attributes; ?>><?php echo esc_html( $legend_content ); ?></legend>
	<?php echo $content; ?>
</fieldset>