提取网页中图片的PHP代码
jopen
10年前
<?php header('content-type:text/html;charset=utf-8'); 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; } ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <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>