PHP抓取网页图片

<?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;
	}
?>
HTML代码
<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>

  

posted @ 2014-11-18 17:18  贱书生  阅读(1117)  评论(0编辑  收藏  举报