测试代码高亮如何

if ( !isset($wp_did_header) ) {

$wp_did_header = true;

// Load the WordPress library.
require_once( dirname(__FILE__) . '/wp-load.php' );

// Set up the WordPress query.
wp();

// Load the theme template.
require_once( ABSPATH . WPINC . '/template-loader.php' );

}