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); 
$searchurl = "http://boss.yahooapis.com/ysearch/web/v1/$key?appid=你的雅虎appid&lang=tzh®ion=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"));