* @version $Id$

*/

class cls_http_request

{

/**

* get方式请求(curl)

*

* @param string $url 请求的url

* @param integer $timeout 超时时间(s)

* @return string(请求成功) | false(请求失败)

*/

public static function curl_get($url, $timeout = 1)

{

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

$result = curl_exec($ch);

curl_close($ch);

if (is_string($result) && strlen($result))

{

return $result;

}

else

{

return false;

}

}

/**

* post方式请求

*

* @param string $url 请求的url

* @param array $data 请求的参数数组(关联数组)

* @param integer $timeout 超时时间(s)

* @return string(请求成功) | false(请求失败)

*/

public static function curl_post($url, $data, $timeout = 2)

{

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);

curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

$result = curl_exec($ch);

curl_close($ch);

if (is_string($result) && strlen($result))

{

return $result;

}

else

{

return false;

}

}

/**

* 多个url并行请求

*

* @param array $urls url数组

* @param integer $timeout 超时时间(s)

* @return array $res 返回结果

*/

public static function curl_get_urls($urls, $timeout = 1)

{

$mh=curl_multi_init();

$chs=array();

foreach($urls as $url)

{

$ch=curl_init();

curl_setopt($ch,CURLOPT_URL,$url);

curl_setopt($ch,CURLOPT_HEADER,false);

curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);

curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,1);

curl_setopt($ch,CURLOPT_TIMEOUT,$timeout);

curl_multi_add_handle($mh,$ch);

$chs[]=$ch;

}

$active=null;

do {

$mrc=curl_multi_exec($mh,$active);

}while($mrc == CURLM_CALL_MULTI_PERFORM);

while($active && $mrc == CURLM_OK)

{

if(curl_multi_select($mh) != -1)

{

do{

$mrc=curl_multi_exec($mh,$active);

}while($mrc == CURLM_CALL_MULTI_PERFORM);

}

}

$res=array();

foreach($chs as $ch)

{

$res[]=curl_multi_getcontent($ch);

curl_multi_remove_handle($mh,$ch);

}

curl_multi_close($mh);

return $res;

}

}