有没有办法将传出的
PHP curl请求限制(延迟)到外部服务器,这样每秒只有n个请求? PHP用于Fastcgi模式,因此无法使用睡眠. 最佳答案 是.有卷曲多处理程序……
(您可以使用this library以OOP方式进行)
例如:
// Creates the curl multi handle
$mh = curl_multi_init();
$handles = array();
foreach($urls as $url)
{
// Create a new single curl handle
$ch = curl_init();
// Set options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 300);
// Add to the multi handle
curl_multi_add_handle($mh,$ch);
// Put the handles in an array to loop this later on
$handles[] = $ch;
}
// Execute the multi handle
$running=null;
do
{
$mrc = curl_multi_exec($mh,$running);
// Added a usleep for 0.50 seconds to reduce load
usleep (250000);
}
while($running > 0);
// Get the content of the urls (if there is any)
$output = array();
for($i=0; $i<count($handles); $i++)
{
// Get the content of the handle
$content = curl_multi_getcontent($handles[$i]);
$output[] = $content;
if($printOutput) {
echo $content;
}
// Remove the handle from the multi handle
curl_multi_remove_handle($mh,$handles[$i]);
}
// close the multi curl handle to free system resources
curl_multi_close($mh);