php实现图片批量下载到本地实例

关于直接采集远程机器图片之后再下载到我们本地其实非常的简单,我们通常会使用fopen 与 file_put_contents 或者高级点的curl来实现,下面我整理了几个比较好用的图片下载到本地例子,大家一起看看.

对于没有防盗链的图片,代码如下:

<?php

/*

 * 对于没有防盗链的图片

 * 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

*/

function GrabImage(url,filepath, filename = "") {

    if (url == "") return false;

    ext = strrchr(url, ".");

    if (filename == "") {

        if (ext != ".gif" && ext != ".jpg" &&ext != ".png") return false;

        filename = date("YmdHis");

    }

    ob_start();

    readfile(url);

    img = ob_get_contents();

    ob_end_clean();size = strlen(img); // 图片大小

    !is_dir(getcwd() .filepath) ? mkdir(getcwd() . filepath) : null; //生成文件夹fp2 = fopen(getcwd() . filepath .filename . ext, "a");

    fwrite(fp2, img);

    fclose(fp2);

    return array(

        filepath .filename . ext,size

    );

}

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('Cjlist')->where("status=1")->select();

        S("keepcjdata",data, 3600);

    } else {

        data = S("keepcjdata");

    }endid = count(data);

    //echoid;

    //echo endid;

    if (endid == id) {

        exit('所有图片下载完成！');

    }

    //echoendid;

    data2['cover_imgurl'] =this->imgdown2(data[id]['cover_imgurl']);

    //echo data[id]['thum_url'];

    data2['thum_url'] =this->imgdown2(data[id]['thum_url'], 'thum_'); //中型图片type

    data2['id'] =data[id]['id'];

    if (!data2['thum_url'] || !data2['cover_imgurl']) {data2['status'] = - 1;

    } else {

        data2['status'] = 2;

    }res = M('Cjlist')->save(data2);

    //this->echosql();

    if (res) {

        echo '下载完成ID:' .data2['id'] . " 前往下一个ID下载<script>window.location.href='" . U('Index/downimg') . "/keep/1/id/" . nextid . "'</script>";

    } else {

        echo '保存出错，正在重试刷新。<script>window.location.reload()</script>';

    }

    //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 = 'http://p0.so.qhimg.com/t0129f40df5810dfaa5.jpg',fromurl = 'http://image.so.com') {

    mulu = "/" . date("YmdH", time()) . "/";reimg = this->GrabImage2(picurl, mulu, time() ,fromurl);

    //img = file_get_contents(picurl);

    //echo file_put_contents('222.jpg',img);

    //exit;

    //reimg="/20140529/1401333398.jpg";

    //dump(reimg);

    //exit;

    if (reimg[1] <= 0) {

        exit("下载图片失败");

    }

    reimg =reimg[0];

    import('ORG.Util.Image');

    Image = new Image();imgurl = getcwd() . reimg;ext = strrchr(imgurl, ".");thum_name = Image->thumb(imgurl, "thum_" . time() . ext, '', '288', '432');

    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.comimgarr['cover_url'] = reimg;imgarr['thum_url'] = mulu .thum_name;

    imgarr['thum_w'] =imginfo['width'];

    imgarr['thum_h'] =imginfo['height'];

    return $imgarr;

}