PHP抓取网页图片

时间：2023-01-07 08:24:24
<?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>

　　

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