ManaPHP\Image\Adapter\Gd::resize PHP Метод

    public function resize($width, $height)
    {
        if (version_compare(PHP_VERSION, '5.5.0') < 0) {
            $image = imagecreatetruecolor($width, $height);
            imagealphablending($image, false);
            imagesavealpha($image, true);
            imagecopyresampled($image, $this->_image, 0, 0, 0, 0, $width, $height, $this->_width, $this->_height);
        } else {
            $image = imagescale($this->_image, $width, $height);
        }
        imagedestroy($this->_image);
        $this->_image = $image;
        $this->_width = imagesx($image);
        $this->_height = imagesy($image);
        return $this;
    }