curl_multi_init比curl_init快30倍
CleverCode发现curl_multi_init比curl_init发送100个请求，快非常多！具体细节如下。
1 https源码
<?php
/*
* https.php
*
* https请求类 http://blog.csdn.net/CleverCode
*
* modification history:
* --------------------
* 2016/5/25, by CleverCode, Create
*
*/
class Https
{/*{{{*/
/**
* https 发起post请求
*
* @param string $url url信息
* @param mixed $data 参数信息[$data = '{"a":1,"b":2}' or $data = array("a" => 1,"b" => 2)]
* @param int $timeOut 超时设置
* @param string $proxyHost 代理host
* @param int $proxyPort 代理端口
* @return string
*/
public static function post($url, $data = null,$timeOut = 20, $proxyHost = null, $proxyPort = null)
{/*{{{*/
try {
if (strlen($url) < 1) {
return null;
}
$ch = curl_init();
// 设置url
curl_setopt($ch, CURLOPT_URL, $url);
if(false == empty($data))
{
curl_setopt($ch, CURLOPT_POST, 1);
// array
if (is_array($data) && count($data) > 0)
{
curl_setopt($ch, CURLOPT_POST, count($data));
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
// 如果成功只将结果返回，不自动输出返回的内容
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// user-agent
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0");
// 超时
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeOut);
// 使用代理
if (strlen($proxyHost) > 0 && strlen($proxyPort) > 0) {
// 代理认证模式
curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
// 代理服务器地址
curl_setopt($ch, CURLOPT_PROXY, $proxyHost);
// 代理服务器端口
curl_setopt($ch, CURLOPT_PROXYPORT, $proxyPort);
// 使用http代理模式
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
}
// 执行
$out = curl_exec($ch);
// 关闭
curl_close($ch);
return $out;
} catch ( Exception $e ) {
return null;
}
return null;
}/*}}}*/
/**
* https 发起post多发请求
*
* @param array $nodes url和参数信息。$nodes = array
* (
* [0] = > array
* (
* 'url' => 'http://www.baidu.com',
* 'data' => '{"a":1,"b":2}'
* ),
* [1] = > array
* (
* 'url' => 'http://www.baidu.com',
* 'data' => null
* )
* ....
* )
* @param int $timeOut 超时设置
* @return array
*/
public static function postMulti($nodes,$timeOut = 5)
{/*{{{*/
try
{
if (false == is_array($nodes))
{
return array();
}
$mh = curl_multi_init();
$curlArray = array();
foreach($nodes as $key => $info)
{
if(false == is_array($info))
{
continue;
}
if(false == isset($info['url']))
{
continue;
}
$ch = curl_init();
// 设置url
$url = $info['url'];
curl_setopt($ch, CURLOPT_URL, $url);
$data = isset($info['data']) ? $info['data'] :null;
if(false == empty($data))
{
curl_setopt($ch, CURLOPT_POST, 1);
// array
if (is_array($data) && count($data) > 0)
{
curl_setopt($ch, CURLOPT_POST, count($data));
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
// 如果成功只将结果返回，不自动输出返回的内容
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// user-agent
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0");
// 超时
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeOut);
$curlArray[$key] = $ch;
curl_multi_add_handle($mh, $curlArray[$key]);
}
$running = NULL;
do {
usleep(10000);
curl_multi_exec($mh,$running);
} while($running > 0);
$res = array();
foreach($nodes as $key => $info)
{
$res[$key] = curl_multi_getcontent($curlArray[$key]);
}
foreach($nodes as $key => $info){
curl_multi_remove_handle($mh, $curlArray[$key]);
}
curl_multi_close($mh);
return $res;
}
catch ( Exception $e )
{
return array();
}
return array();
}/*}}}*/
}/*}}}*/
2 100个请求
2.1 循环调用https::post()一百次。
<?php
require_once "https.php";
function microtimeFloat()
{/*{{{*/
list($usec, $sec) = explode(" ", microtime());
return ($usec + $sec);
}/*}}}*/
$url = 'https://api.weixin.qq.com/cgi-bin/getcallbackip?access_token=abcdasdfasdfasdfasdfasdfasdfasdfasdfasdf';
$startTime = microtimeFloat();
$count = 100;
for($i=1; $i <= 100;$i++)
{
$res = Https::post($url);
}
$endTime = microtimeFloat();
echo $endTime - $startTime;
echo "\r\n";
?>
2.2 调用https::postMulti()一次发100个url。
<?php
require_once "https.php";
function microtimeFloat()
{/*{{{*/
list($usec, $sec) = explode(" ", microtime());
return ($usec + $sec);
}/*}}}*/
$url = 'https://api.weixin.qq.com/cgi-bin/getcallbackip?access_token=abcdasdfasdfasdfasdfasdfasdfasdfasdfasdf';
$nodes = array();
for($i=1; $i <= 100;$i++)
{
$info = array();
$info['url'] = $url;
$nodes[] = $info;
}
$startTime = microtimeFloat();
$res = Https::post($nodes);
$endTime = microtimeFloat();
echo $endTime - $startTime;
echo "\r\n";
?>
3 结果对比
2.1 方式耗时：15.47503900528。
2.2 方式耗时：0.49252104759216。
15.47503900528 / 0.49252104759216 = 30。
2.2 比2.1快30倍！！！
4 结论
当需要一次发送多个请求的时候，尽量使用curl_multi_init方式。