stream_is_local

<?php     public function copy(string $originFile, string $targetFile, bool $overwriteNewerFiles = false)

    {

        $originIsLocal = stream_is_local($originFile) || 0 === stripos($originFile, 'file://');

        if ($originIsLocal && !is_file($originFile)) {

            throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile);

        }