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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）

}