GdThumb::__construct PHP Method

    public function __construct($fileName, $options = array(), $isDataStream = false)
    {
        parent::__construct($fileName, $isDataStream);
        $this->determineFormat();
        if ($this->isDataStream === false) {
            $this->verifyFormatCompatiblity();
        }
        switch ($this->format) {
            case 'GIF':
                $this->oldImage = imagecreatefromgif($this->fileName);
                break;
            case 'JPG':
                $this->oldImage = imagecreatefromjpeg($this->fileName);
                break;
            case 'PNG':
                $this->oldImage = imagecreatefrompng($this->fileName);
                break;
            case 'STRING':
                $this->oldImage = imagecreatefromstring($this->fileName);
                break;
        }
        $this->currentDimensions = array('width' => imagesx($this->oldImage), 'height' => imagesy($this->oldImage));
        $this->setOptions($options);
        // TODO: Port gatherImageMeta to a separate function that can be called to extract exif data
    }

 public function __construct($filename, $options = array(), $isDataStream = false)
 {
     $default = array('resizeUp' => true, 'jpegQuality' => 80, 'correctPermissions' => true, 'preserveAlpha' => true, 'alphaMaskColor' => array(255, 255, 255), 'preserveTransparency' => true, 'transparencyMaskColor' => array(0, 0, 0));
     $options = array_merge($default, $options);
     parent::__construct($filename, $options, $isDataStream);
 }