public function scan()
    {
        $files = $this->extensionsFile($this->files);

        foreach ($files as $file) {
            $content = file_get_contents($file);

            if (str_contains($file, '.php') && !str_contains($file,
                    $this->exceptionsValid) && !$this->checkForValidPhp($content)
            ) {
                $this->notValid[] = $file;
            }

            if (str_contains($content, $this->signatures)) {
                $this->dangerFiles[] = $file;
                /*([
                    'path' => $file,
                    //'meta' => $meta,
                    'date' => date('d.m.Y',$meta['mtime']),
                    'size' => $meta['size'],
                ];
                */
            }
        }

        return $this;
    }