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

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

$curlutil = new curlutil();

3.抓取yahoo搜索结果

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&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"));