php采集网页所有图片

PHP后端

PHP端源码

<?php
    set_time_limit(0);
//抓取不受时间限制
if($_POST['Submit']=="开始抓取") {
    $URL=$_POST['link'];
    get_pic($URL);
}
function get_pic($pic_url) {
    //获取图片二进制流
    $data=CurlGet($pic_url);
    //利用正则表达式得到图片链接
    $pattern_src1 = '/<img.*?src\=\"(.*\.jpg).*?>/';
    //只匹配jpg格式的图片
    $pattern_src2 = '/<img.*?src\=\"(.*\.bmp).*?>/';
    //只匹配bmp格式的图片
    $pattern_src3 = '/<img.*?src\=\"(.*\.png).*?>/';
    //只匹配png格式的图片
    $pattern_src4 = '/<img.*?src\=\"(.*\.gif).*?>/';
    //只匹配gif格式的图片
    $num1 = preg_match_all($pattern_src1, $data, $match_src1);
    $num2 = preg_match_all($pattern_src2, $data, $match_src2);
    $num3 = preg_match_all($pattern_src3, $data, $match_src3);
    $num4 = preg_match_all($pattern_src4, $data, $match_src4);
    $arr_src1=$match_src1[1];
    //获得图片数组
    $arr_src2=$match_src2[1];
    $arr_src3=$match_src3[1];
    $arr_src4=$match_src4[1];
    echo '======抓取开始======<br />';
    get_name1($arr_src1);
    get_name1($arr_src2);
    get_name1($arr_src3);
    get_name1($arr_src4);
    get_name2($arr_src1);
    get_name2($arr_src2);
    get_name2($arr_src3);
    get_name2($arr_src4);
    echo '======抓取结束=======<br />';
    return 0;
}
function get_name1($pic_arr) {
    //图片编号和类型
    $pattern_type = '/.*\/(.*?)$/';
    foreach($pic_arr as $pic_item) {
        //循环取出每幅图的地址
        $num = preg_match_all($pattern_type,$pic_item,$match_type);
        //以流的形式保存图片
        $write_fd = @fopen($match_type[1][0],"wb");
        echo "图片网址：<a href='".$pic_item."' target='_blank'>".$pic_item."</a><br />";
        @fwrite($write_fd, CurlGet($pic_item));
        @fclose($write_fd);
    }
    return 0;
}
function get_name2($pic_arr) {
    //图片编号和类型
    $pattern_type = '/.*\/(.*?)$/';
    foreach($pic_arr as $pic_item) {
        //循环取出每幅图的地址
        $num = preg_match_all($pattern_type,$pic_item,$match_type);
        //以流的形式保存图片
        $write_fd = @fopen($match_type[1][0],"wb");
        echo "图片网址：<a href='".$_POST['link'].$pic_item."' target='_blank'>".$_POST['link'].$pic_item."</a><br />";
        @fwrite($write_fd, CurlGet($_POST['link'].$pic_item));
        @fclose($write_fd);
    }
    return 0;
}
//抓取网页内容
function CurlGet($url) {
    $url=str_replace('&','&',$url);
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_HEADER, false);
    //curl_setopt($curl, CURLOPT_REFERER,$url);
    curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; SeaPort/1.2; Windows NT 5.1; SV1; InfoPath.2)");
    curl_setopt($curl, CURLOPT_COOKIEJAR, 'cookie.txt');
    curl_setopt($curl, CURLOPT_COOKIEFILE, 'cookie.txt');
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 0);
    $values = curl_exec($curl);
    curl_close($curl);
    return $values;
}
?>

前端源码

<html>  
  <head>
    <title>
      网页图片抓取
    </title>
  </head>  
  <body>
    <form action="" method="post">
      要抓取图片的网址：
      <input type="text" id="link" name="link" value="请在这里输入要抓取图片的网址" OnClick="this.value=''"
      size="100" />
      <br />
      <input type="submit" id="Submit" name="Submit" value="开始抓取" />
    </form>
  </body>
</html>