1. Go to this page and download the library: Download toolkit/cli-utils library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?phprequire_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
useToolkit\Cli\Util\Highlighter;
// this is an comment
$rendered = Highlighter::create()->highlight(file_get_contents(__FILE__));
\Toolkit\Cli\Cli::write($rendered);