(二)curlの同時使用によるバックエンドアクセス時間の短縮
前言:私达のふだんのプログラムの中でどうしてもいくつかのインタフェースに同时にアクセスする情况が现れて、ふだん私达はcurlでアクセスする时、普通はすべて単一で、顺番にアクセスして、もし3つのインタフェースがあって、1つのインタフェースごとに500ミリ秒かかりますならば、私达の3つのインタフェースは1500ミリ秒かかります今日は簡単に言えば、curl同時利用でページアクセス速度を向上させるので、ご指導をお願いします.1、古いcurlアクセス方式及び消費時間統計
時間:0.614秒
2、curl同時アクセス方式及び消費時間統計
消費時間:0.316秒かっこいいでしょうページ全体がバックエンドインタフェースにアクセスする時間を半分節約しました
3、curl関連パラメータ:http://cn2.php.net/manual/en/ref.curl.php curl_close — Close a cURL session curl_copy_handle — Copy a cURL handle along with all of its preferences curl_errno — Return the last error number curl_error — Return a string containing the last error for the current session curl_exec — Perform a cURL session curl_getinfo — Get information regarding a specific transfer curl_init — Initialize a cURL session curl_multi_add_handle — Add a normal cURL handle to a cURL multi handle curl_multi_close — Close a set of cURL handles curl_multi_exec — Run the sub-connections of the current cURL handle curl_multi_getcontent — Return the content of a cURL handle if CURLOPT_RETURNTRANSFER is set curl_multi_info_read — Get information about the current transfers curl_multi_init — Returns a new cURL multi handle curl_multi_remove_handle — Remove a multi handle from a set of cURL handles curl_multi_select — Wait for activity on any curl_multi connection curl_setopt_array — Set multiple options for a cURL transfer curl_setopt — Set an option for a cURL transfer curl_version-Gets cURL version information 4、次号予告(三)phpのopcodeキャッシュ
<?php
function curl_fetch($url, $timeout=3){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($ch);
$errno = curl_errno($ch);
if ($errno>0) {
$data = false;
}
curl_close($ch);
return $data;
}
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
$url_arr=array(
"taobao"=>"http://www.taobao.com",
"sohu"=>"http://www.sohu.com",
"sina"=>"http://www.sina.com.cn",
);
$time_start = microtime_float();
$data=array();
foreach ($url_arr as $key=>$val)
{
$data[$key]=curl_fetch($val);
}
$time_end = microtime_float();
$time = $time_end - $time_start;
echo " :{$time}";
?>時間:0.614秒
2、curl同時アクセス方式及び消費時間統計
<?php
function curl_multi_fetch($urlarr=array()){
$result=$res=$ch=array();
$nch = 0;
$mh = curl_multi_init();
foreach ($urlarr as $nk => $url) {
$timeout=2;
$ch[$nch] = curl_init();
curl_setopt_array($ch[$nch], array(
CURLOPT_URL => $url,
CURLOPT_HEADER => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_TIMEOUT => $timeout,
));
curl_multi_add_handle($mh, $ch[$nch]);
++$nch;
}
/* wait for performing request */
do {
$mrc = curl_multi_exec($mh, $running);
} while (CURLM_CALL_MULTI_PERFORM == $mrc);
while ($running && $mrc == CURLM_OK) {
// wait for network
if (curl_multi_select($mh, 0.5) > -1) {
// pull in new data;
do {
$mrc = curl_multi_exec($mh, $running);
} while (CURLM_CALL_MULTI_PERFORM == $mrc);
}
}
if ($mrc != CURLM_OK) {
error_log("CURL Data Error");
}
/* get data */
$nch = 0;
foreach ($urlarr as $moudle=>$node) {
if (($err = curl_error($ch[$nch])) == '') {
$res[$nch]=curl_multi_getcontent($ch[$nch]);
$result[$moudle]=$res[$nch];
}
else
{
error_log("curl error");
}
curl_multi_remove_handle($mh,$ch[$nch]);
curl_close($ch[$nch]);
++$nch;
}
curl_multi_close($mh);
return $result;
}
$url_arr=array(
"taobao"=>"http://www.taobao.com",
"sohu"=>"http://www.sohu.com",
"sina"=>"http://www.sina.com.cn",
);
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
$time_start = microtime_float();
$data=curl_multi_fetch($url_arr);
$time_end = microtime_float();
$time = $time_end - $time_start;
echo " :{$time}";
?>消費時間:0.316秒かっこいいでしょうページ全体がバックエンドインタフェースにアクセスする時間を半分節約しました
3、curl関連パラメータ:http://cn2.php.net/manual/en/ref.curl.php curl_close — Close a cURL session curl_copy_handle — Copy a cURL handle along with all of its preferences curl_errno — Return the last error number curl_error — Return a string containing the last error for the current session curl_exec — Perform a cURL session curl_getinfo — Get information regarding a specific transfer curl_init — Initialize a cURL session curl_multi_add_handle — Add a normal cURL handle to a cURL multi handle curl_multi_close — Close a set of cURL handles curl_multi_exec — Run the sub-connections of the current cURL handle curl_multi_getcontent — Return the content of a cURL handle if CURLOPT_RETURNTRANSFER is set curl_multi_info_read — Get information about the current transfers curl_multi_init — Returns a new cURL multi handle curl_multi_remove_handle — Remove a multi handle from a set of cURL handles curl_multi_select — Wait for activity on any curl_multi connection curl_setopt_array — Set multiple options for a cURL transfer curl_setopt — Set an option for a cURL transfer curl_version-Gets cURL version information 4、次号予告(三)phpのopcodeキャッシュ