我正在尝试使用比较大的域列表来查询每个域的排名,如下所示 -> https://www.compete.com/developer/documentation
我编写的脚本采用我填充的域数据库并发起 cURL 请求来竞争网站的排名。我很快意识到这非常慢,因为每个请求一次发送一个。我做了一些搜索,发现了这篇文章-> http://www.phpied.com/simultaneuos-http-requests-in-php-with-curl/它解释了如何在 PHP 中使用 cURL 执行并发 HTTP 请求。
不幸的是,该脚本将采用 25,000 个域的数组并尝试一次处理所有这些域。我发现 1,000 个批处理效果很好。
知道如何向compute.com发送1,000个查询,然后等待完成并发送下一个1,000个查询,直到数组为空?这是我正在处理的内容到目前为止:
<?php
//includes
include('includes/mysql.php');
include('includes/config.php');
//get domains
$result = mysql_query("SELECT * FROM $tableName");
while($row = mysql_fetch_array($result)) {
$competeRequests[] = "http://apps.compete.com/sites/" . $row['Domain'] . "/trended/rank/?apikey=xxx&start_date=201207&end_date=201208&jsonp=";
}
//first batch
$curlRequest = multiRequest($competeRequests);
$j = 0;
foreach ($curlRequest as $json){
$j++;
$json_output = json_decode($json, TRUE);
$rank = $json_output[data][trends][rank][0][value];
if($rank) {
//Create mysql query
$query = "Update $tableName SET Rank = '$rank' WHERE ID = '$j'";
//Execute the query
mysql_query($query);
echo $query . "<br/>";
}
}
function multiRequest($data) {
// array of curl handles
$curly = array();
// data to be returned
$result = array();
// multi handle
$mh = curl_multi_init();
// loop through $data and create curl handles
// then add them to the multi-handle
foreach ($data as $id => $d) {
$curly[$id] = curl_init();
$url = (is_array($d) && !empty($d['url'])) ? $d['url'] : $d;
curl_setopt($curly[$id], CURLOPT_URL, $url);
curl_setopt($curly[$id], CURLOPT_HEADER, 0);
curl_setopt($curly[$id], CURLOPT_RETURNTRANSFER, 1);
// post?
if (is_array($d)) {
if (!empty($d['post'])) {
curl_setopt($curly[$id], CURLOPT_POST, 1);
curl_setopt($curly[$id], CURLOPT_POSTFIELDS, $d['post']);
}
}
curl_multi_add_handle($mh, $curly[$id]);
}
// execute the handles
$running = null;
do {
curl_multi_exec($mh, $running);
} while($running > 0);
// get content and remove handles
foreach($curly as $id => $c) {
$result[$id] = curl_multi_getcontent($c);
curl_multi_remove_handle($mh, $c);
}
// all done
curl_multi_close($mh);
return $result;
}
?>
最佳答案
而不是
//first batch
$curlRequest = multiRequest($competeRequests);
$j = 0;
foreach ($curlRequest as $json){
你可以这样做:
$curlRequest = array();
foreach (array_chunk($competeRequests, 1000) as $requests) {
$results = multiRequest($requests);
$curlRequest = array_merge($curlRequest, $results);
}
$j = 0;
foreach ($curlRequest as $json){
$j++;
// ...
这会将大型数组分成 1,000 个 block ,并将这 1,000 个值传递给您的 multiRequest
函数,该函数使用 cURL 来执行这些请求。
关于php - PHP 中使用 cURL 的同步 HTTP 请求,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12379801/