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HomeBackend DevelopmentPHP Tutorial采集练习(一) php 获得全国的小学(数据来自腾讯朋友网)

  

    注:发现腾讯朋友网已经改版,部分参数需要自己获得修改 !!!

  年前有个需求获得某省的小学数据,分析了下朋友网的小学学校发现可以获得相关数据。

如获得  湖南省郴州市宜章县的全部小学  

发现网页请求的地址是

http://api.pengyou.com/json.php?cb=__i_3&mod=school&act=selector&schooltype=6&country=0&province=43&district=431022&g_tk=1964222334 

这里返回的是一个json  

document.domain = "pengyou.com"; __i_3({"code":0,"subcode":0,"......});

 

解析后发现里面是  宜章县的全部小学。。。

分析了下参数

schooltype=6  表示小学

country  = 0 表示 中国

province = 43 表示湖南省

district   = 431022 表示宜章县

g_tk      = 1964222334  不清楚 估计是随机数

有了这几个参数  就可以自己获得相应的 小学了。。

获得 湖南省郴州市 的所有县: http://api.pengyou.com/json.php?cb=__i_6&mod=getdistrict&cityid=4310&district_obj_name=_distinct&g_tk=271354436  

要获得  学校必须获得province 、district 的值  但我没发现相应的网络请求获得相应的 province 、district    于是到页面上查找 发现 province 的值来自 

http://cn.qzonestyle.gtimg.cn/campus/js/locations.js

需要解决的问题:

1、 获得locations.js 里的 省份 城市 id 值 时 需要 用到正则表达式

2、 根据  市 id 获得县 id

3、file_get_contents  获得 相关学校时 需要带上 相应的 user_agent  并配置 否则获不到数据。

以下是相应的代码  

header("Content-type:text/html; charset=utf-8");set_time_limit(0);$js_data = @file_get_contents("locations.js");preg_match_all("/;location_array\[([0-9]{2})?\]='([^']+)?'/",$js_data,$locations);$datas = array();if(array_filter($locations[1]) && array_filter($locations[2])){    foreach($locations[1] as $key => $val){        preg_match_all("/;sublocation_array\[".$val."\]\[([0-9]{4,})\]='([^']+)?'/", $js_data, $matches);        $datas[$val]['name']= $locations[2][$key];        foreach($matches[1] as $k =>$v){            $datas[$val]['sub'][$v] = $matches[2][$k];        }    } }function getDatas($url){    $getPageSetting = array(        'http' => array(           'timeout' => 5,           'method' => 'GET',           'protocol_version'=>'1.1',           'header' =>                    "User-Agent: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7\r\n" .                    //"Referer: http://......php\r\n".浏览器访问过的,上一个页面的整个url地址字符串,直接在地址栏输入url访问此页面则没有此项                    "Host: isdspeed.qq.com\r\n" .//这项可以省略,如果这里设置错误会报错:failed to open stream: HTTP request failed!                     "Accept-Language: zh-cn,zh;q=0.5\r\n" .                    "Accept-Encoding: gzip, deflate\r\n" .                    "Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3\r\n" .                    "Content-Type:application/x-www-form-urlencoded".                    "Accept: text/javascript, application/javascript, */*\r\n" .                    "Connection: keep-alive\r\n\r\n"        )    );    //$getHtml= file_get_contents($url, FALSE, stream_context_create($getPageSetting));   // 发现腾讯朋友网已经改版 所以直接用 file_get_contents 获得    $getHtml = file_get_contents($url); return $getHtml;    }/** * 创建文件夹 * @param string $path 文件夹路径 */function createFolder($path){    if (!file_exists($path)) {        createFolder(dirname($path));        mkdir($path, 0777);    }}$areas = array();// 获得相关省市县的小学foreach ($datas as $pid=>$rows){    foreach($rows as $k=>$v){        if($k =='sub'){            foreach($v as $cid =>$city){                $cityUrl = "http://api.pengyou.com/json.php?mod=getdistrict&cityid=".$cid."&district_obj_name=_distinct&g_tk=1523170442";                $result = getDatas($cityUrl);                $districtIds = json_decode($result,true);                $areas[$pid][$cid] = $districtIds['result']['district_arr'];                $district_arr= $districtIds['result']['district_arr'];                foreach($district_arr as $did =>$district){                    $url = "http://api.pengyou.com/json.php?&mod=school&act=selector&schooltype=6&country=0&province=".$pid."&district=".$did."&g_tk=1523170442";                    $schools = getDatas($url);                    $schools = json_decode($schools,true);                    $school_data = str_replace("&middot;","\r\n",strip_tags($schools['result']));                    $dirs = "school/".iconv('utf-8', 'gbk', $rows['name'])."/".iconv('utf-8', 'gbk', $city);                    createFolder($dirs);                    @file_put_contents($dirs.'/'.iconv('utf-8', 'gbk', $district).'.txt', $school_data);                }            }                    }            }}echo '<pre class="brush:php;toolbar:false">';print_r($areas);

 

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