php下通过curl抓取yahoo boss 搜索结果的实现代码

　　1.编写curl类，进行网页内容抓取
复制代码 代码如下:
class CurlUtil
{
private $curl;
private $timeout = 10;
/**
* 初始化curl对象
*/
public function __construct()
{
$this->curl = curl_init();
curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($this->curl, CURLOPT_USERAGENT, Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1));
curl_setopt($this->curl, CURLOPT_HEADER, false); //设定是否显示头信息
curl_setopt($this->curl, CURLOPT_NOBODY, false); //设定是否输出页面内容
curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, $this->timeout);
curl_setopt($this->curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($this->curl, CURLOPT_AUTOREFERER, true);
}
/**
* 注销函数 关闭curl对象
*/
public function __destruct()
{
curl_close($this->curl);
}
/**
* 获取网页的内容
*/
public function getWebPageContent($url)
{
curl_setopt($this->curl, CURLOPT_URL, $url);
return curl_exec($this->curl);
}
}


2.创建curl对象
复制代码 代码如下:
$CurlUtil = new CurlUtil();

3.抓取yahoo搜索结果
复制代码 代码如下:
function getYahooSearch(CurlUtil $curl, $key)
{
$key = urlencode($key);
$searchUrl = 你的雅虎appid&lang=tzh&region=hk&abstract=long&count=20&format=json&start=0&count=10;
$josnStr = $curl->getWebPageContent($searchUrl);
$searchDataInfo = json_decode($josnStr, true);
$searchData = $searchDataInfo[ysearchresponse][resultset_web];
$returnArray = array();
if (!empty($searchData)) {
foreach ($searchData as $data) {
$returnArray[] = array(url => $data[url], date => $data[date], title => strip_tags($data[title]), description => strip_tags($data[abstract]));
}
}
return $returnArray;
}

4.测试结果
var_dump(getYahooSearch($CurlUtil, 百度));