php实现图片批量下载到本地实例

对于没有防盗链的图片,代码如下:

有防盗链的图片, 代码如下:
/*
 * 有防盗链的图片
 * $url 图片地址
 * $filename 图片保存地址
 * return 返回下载的图片路径和名称,图片大小
 * $fromurl 来源URL，填写来源图片网址可破解防盗链
*/
function GrabImage2($url, $filepath, $filename = "", $fromurl) {
    if ($url == "") return false;
    $ext = strrchr($url, ".");
    if ($filename == "") {
        if ($ext != ".gif" && $ext != ".jpg" && $ext != ".png") return false;
        $filename = date("YmdHis");
    }
    !is_dir(getcwd() . $filepath) ? mkdir(getcwd() . $filepath) : null; //生成文件夹
    $re = $this->curlg($url, $fromurl);
    $size = file_put_contents(getcwd() . $filepath . $filename . $ext, $re); //返回大小
    return array(
        $filepath . $filename . $ext,
        $size
    );
}
批量采集代码:
/** 
 * 批量下载图片
 */
public function downimg() {
    $keep = $this->_get("keep"); //1从缓存获取2删除缓存/重新缓存
    $id = $this->_get("id");
    $id = $id ? $id : 0;
    $nextid = $id + 1;
    if ($keep != 1) {
        $data = M(&＃39;Cjlist&＃39;)->where("status=1")->select();
        S("keepcjdata", $data, 3600);
    } else {
        $data = S("keepcjdata");
    }
    $endid = count($data);
    //echo $id;
    //echo $endid;
    if ($endid == $id) {
        exit(&＃39;所有图片下载完成！&＃39;);
    }
    //echo $endid;
    $data2[&＃39;cover_imgurl&＃39;] = $this->imgdown2($data[$id][&＃39;cover_imgurl&＃39;]);
    //echo $data[$id][&＃39;thum_url&＃39;];
    $data2[&＃39;thum_url&＃39;] = $this->imgdown2($data[$id][&＃39;thum_url&＃39;], &＃39;thum_&＃39;); //中型图片type
    $data2[&＃39;id&＃39;] = $data[$id][&＃39;id&＃39;];
    if (!$data2[&＃39;thum_url&＃39;] || !$data2[&＃39;cover_imgurl&＃39;]) {
        $data2[&＃39;status&＃39;] = - 1;
    } else {
        $data2[&＃39;status&＃39;] = 2;
    }
    $res = M(&＃39;Cjlist&＃39;)->save($data2);
    //$this->echosql();
    if ($res) {
        echo &＃39;下载完成ID:&＃39; . $data2[&＃39;id&＃39;] . " 前往下一个ID下载";
    } else {
        echo &＃39;保存出错，正在重试刷新。&＃39;;
    }
    //dump($data2);
    //dump($data);
    
}
同时还可以生成缩略图, 代码如下:
/*
 *图片采集保存本地生成缩略图
 *
 * */
public function imgdown($picurl = &＃39;http://p0.so.qhimg.com/t0129f40df5810dfaa5.jpg&＃39;, $fromurl = &＃39;http://image.so.com&＃39;) {
    $mulu = "/" . date("YmdH", time()) . "/";
    $reimg = $this->GrabImage2($picurl, $mulu, time() , $fromurl);
    //$img = file_get_contents($picurl);
    //echo file_put_contents(&＃39;222.jpg&＃39;,$img);
    //exit;
    //$reimg="/20140529/1401333398.jpg";
    //dump($reimg);
    //exit;
    if ($reimg[1] <= 0) {
        exit("下载图片失败");
    }
    $reimg = $reimg[0];
    import(&＃39;ORG.Util.Image&＃39;);
    $Image = new Image();
    $imgurl = getcwd() . $reimg;
    $ext = strrchr($imgurl, ".");
    $thum_name = $Image->thumb($imgurl, "thum_" . time() . $ext, &＃39;&＃39;, &＃39;288&＃39;, &＃39;432&＃39;);
    rename(getcwd() . "/" . $thum_name, getcwd() . $mulu . $thum_name); //移动到文件夹里面
    $imginfo = $Image->getImageInfo(getcwd() . $mulu . $thum_name);
    //dump($imginfo);//开源代码phprm.com
    $imgarr[&＃39;cover_url&＃39;] = $reimg;
    $imgarr[&＃39;thum_url&＃39;] = $mulu . $thum_name;
    $imgarr[&＃39;thum_w&＃39;] = $imginfo[&＃39;width&＃39;];
    $imgarr[&＃39;thum_h&＃39;] = $imginfo[&＃39;height&＃39;];
    return $imgarr;
}

 
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