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class codeImg

public function constr($source)  
{  
    $this->date = '' . date('Ymd') . '/';  
    $this->img = $this->date . md5($source) . '.jpg';  
    $this->main = imagecreatefromjpeg($source);  
    $this->width = imagesx($this->main);  
    $this->height = imagesy($this->main);  
    $this->target = imagecreatetruecolor($this->width, $this->height);  
    $this->white = imagecolorallocate($this->target, 255, 255, 255);  
    imagefill($this->target, 0, 0, $this->white);  
    imagecopyresam  
}  
// 其他方法和属性声明（如果有）

}

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