php: 通过url下载图片

原创· kay· 07月26日·

class Spider {

    public function downloadImage($url, $path='images/') {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 信任任何证书
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
    $file = curl_exec($ch);
    curl_close($ch);

    $this->saveAsImage($url, $file, $path);
  }

 // 保存图片
  private function saveAsImage($url, $file, $path) {

    $filename = pathinfo($url, PATHINFO_BASENAME);
    $resource = fopen($path . $filename, 'a');
    fwrite($resource, $file);
    fclose($resource);
  }

}

$spider = new Spider();

$spider->downloadImage($url);