Language: PHP
Label: safe
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
    public function close()
    {
        if (!$this->handle) return false;
        $status = $this->fs->fclose($this->handle);
        $this->handle = false;
        return $status;
    }