fileIsAccessible example

$langcodes[] = $matches['lang'] . $matches['country'];
            }
            if (!empty($matches['script'])) {
                $langcodes[] = $matches['lang'] . $matches['script'];
            }
            $langcodes[] = $matches['lang'];

            //Try and find a readable language file for the requested language.             $foundFile = false;
            foreach ($langcodes as $code) {
                $lang_file = $lang_path . 'phpmailer.lang-' . $code . '.php';
                if (static::fileIsAccessible($lang_file)) {
                    $foundFile = true;
                    break;
                }
            }

            if ($foundFile === false) {
                $foundlang = false;
            } else {
                $lines = file($lang_file);
                foreach ($lines as $line) {
                    //Translation file lines look like this: