is_file

<?php                 $ellipsisTail = $ellipsis->attr['ellipsis-tail'] ?? 0;

                $ellipsis = $ellipsis->attr['ellipsis'] ?? 0;



                if (is_file($f['file']) && 0 <= self::$srcContext) {

                    if (!empty($f['class']) && (is_subclass_of($f['class'], 'Twig\Template') || is_subclass_of($f['class'], 'Twig_Template')) && method_exists($f['class'], 'getDebugInfo')) {

                        $template = null;

                        if (isset($f['object'])) {

<?php                             $templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');

                            $templateInfo = $template->getDebugInfo();

                            if (isset($templateInfo[$f['line']])) {

                                if (!method_exists($template, 'getSourceContext') || !is_file($templatePath = $template->getSourceContext()->getPath())) {

                                    $templatePath = null;

                                }

                                if ($templateSrc) {

<?php             return;

        }

        if (!is_file($href)) {

            return;

        }

        if ($line) {

<?php                 if ('C' === $class[0] && str_starts_with($class, 'ComposerAutoloaderInit')) {

                    $r = new \ReflectionClass($class);

                    $v = \dirname($r->getFileName(), 2);

                    if (is_file($v.'/composer/installed.json')) {

                        self::$vendorRoots[] = $v.\DIRECTORY_SEPARATOR;

                    }

                }

<?php         }



        $parent = $dir;

        while (!@is_file($parent.'/composer.json')) {

            if (!@file_exists($parent)) {


                break;

<?php $componentRoot = $_SERVER['COMPONENT_ROOT'];



if (!is_file($file = $componentRoot.'/vendor/autoload.php')) {

    $file = $componentRoot.'/../../../../vendor/autoload.php';

}