php下载图片

public function down_images() {
//下载图片的链接
$url = 'http://qr.liantu.com/api.php?text=https://www.girlsf.com/frontend/public/index.php/subject/personal/index';

    $header = array("Connection: Keep-Alive", "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "Pragma: no-cache", "Accept-Language: zh-Hans-CN,zh-Hans;q=0.8,en-US;q=0.5,en;q=0.3", "User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:29.0) Gecko/20100101 Firefox/29.0");
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    //curl_setopt($ch, CURLOPT_HEADER, $v);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');
    $content = curl_exec($ch);
    $curlinfo = curl_getinfo($ch);
    //print_r($curlinfo);
    //关闭连接
    curl_close($ch);
    if ($curlinfo['http_code'] == 200) {
    if ($curlinfo['content_type'] == 'image/jpeg') {
    $exf = '.jpg';
    } else if ($curlinfo['content_type'] == 'image/png') {
    $exf = '.png';
    } else if ($curlinfo['content_type'] == 'image/gif') {
    $exf = '.gif';
    }
    //存放图片的路径及图片名称  *****这里注意 你的文件夹是否有创建文件的权限 chomd -R 777 mywenjian
    $filename = date("YmdHis") . uniqid() . $exf;//这里默认是当前文件夹，可以加路径的 可以改为$filepath = '../'.$filename
    $filepath = $filename;
    //var_dump($content);
    $res = file_put_contents($filepath, $content);
    $res = file_put_contents($filename, $content);//同样这里就可以改为$res = file_put_contents($filepath, $content);
    $name = $filepath;
    return $name;
    //echo $filepath;
    //echo $res;
    }
  }

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