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  • 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>
    

      

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  • 原文地址:https://www.cnblogs.com/rnckty/p/4106294.html
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