如何用PHP实现图片处理类？

``php，class ImageProcessor {， private $image;，， public function __construct($imagePath) {， $this>image = imagecreatefromjpeg($imagePath);， }，， public function resize($width, $height) {， $newImage = imagecreatetruecolor($width, $height);， imagecopyresampled($newImage, $this>image, 0, 0, 0, 0, $width, $height, imagesx($this>image), imagesy($this>image));， return $newImage;， }，}，``

<?php
class ImageProcessor {
    private $image;
    private $width;
    private $height;
    public function __construct($filePath) {
        if (!file_exists($filePath)) {
            throw new Exception("File not found: " . $filePath);
        }
        $this>image = imagecreatefromjpeg($filePath);
        $this>width = imagesx($this>image);
        $this>height = imagesy($this>image);
    }
    public function resize($newWidth, $newHeight) {
        $resizedImage = imagecreatetruecolor($newWidth, $newHeight);
        imagecopyresampled($resizedImage, $this>image, 0, 0, 0, 0, $newWidth, $newHeight, $this>width, $this>height);
        $this>image = $resizedImage;
        $this>width = $newWidth;
        $this>height = $newHeight;
    }
    public function save($outputPath) {
        imagejpeg($this>image, $outputPath);
    }
    public function getDimensions() {
        return array('width' => $this>width, 'height' => $this>height);
    }
}
// 使用示例
try {
    $processor = new ImageProcessor('input.jpg');
    $processor>resize(300, 200);
    $processor>save('output.jpg');
    echo "Image resized and saved successfully!";
} catch (Exception $e) {
    echo "Error: " . $e>getMessage();
}
?>

（图片来源网络，侵删）