php - 如何通过优化我的 PHP 代码来减少虚拟内存？

Question

我当前的代码(见下文)使用了 147MB 的虚拟内存!我的提供商默认分配了 100MB，进程一旦运行就被杀死，导致内部错误。该代码使用 curl multi，并且必须能够循环超过 150 次迭代，同时仍然最小化虚拟内存。下面的代码仅设置为 150 次迭代，仍然会导致内部服务器错误。在 90 次迭代时，问题不会发生。

如何调整我的代码以降低资源使用/虚拟内存？

谢谢!

<?php

    function udate($format, $utimestamp = null) {
      if ($utimestamp === null)
        $utimestamp = microtime(true);
      $timestamp = floor($utimestamp);
      $milliseconds = round(($utimestamp - $timestamp) * 1000);
      return date(preg_replace('`(?<!\\\\)u`', $milliseconds, $format), $timestamp);
    }

$url = 'https://www.testdomain.com/';
$curl_arr = array();
$master = curl_multi_init();

for($i=0; $i<150; $i++)
{
    $curl_arr[$i] = curl_init();
    curl_setopt($curl_arr[$i], CURLOPT_URL, $url);
    curl_setopt($curl_arr[$i], CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl_arr[$i], CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($curl_arr[$i], CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_multi_add_handle($master, $curl_arr[$i]);
}

do {
    curl_multi_exec($master,$running);
} while($running > 0);

for($i=0; $i<150; $i++)
{
    $results = curl_multi_getcontent ($curl_arr[$i]);
    $results = explode("<br>", $results);
      echo $results[0];
      echo "<br>";
      echo $results[1];
      echo "<br>";
      echo udate('H:i:s:u');
      echo "<br><br>";
      usleep(100000);
}

?>

Answer 1

根据您最后的评论..

下载 RollingCurl.php 。

希望这能充分利用您的 API 发送垃圾邮件。

<?php

$url = '________';
$fetch_count = 150;
$window_size = 5;


require("RollingCurl.php");

function request_callback($response, $info, $request) {
    list($result0, $result1) = explode("<br>", $response);
    echo "{$result0}<br>{$result1}<br>";
    //print_r($info);
    //print_r($request);
    echo "<hr>";
}


$urls = array_fill(0, $fetch_count, $url);

$rc = new RollingCurl("request_callback");
$rc->window_size = $window_size;
foreach ($urls as $url) {
    $request = new RollingCurlRequest($url);
    $rc->add($request);
}
$rc->execute();

?>

---

查看您的问题，我看到了 this comment :

If the intention is domain snatching, then using one of the established services is a better option. Your script implementation is hardly as important as the actual connection and latency.

我同意这个评论。

此外，您似乎已经发布了大约 七百次 的“相同问题”:

https://stackoverflow.com/users/558865/icer
https://stackoverflow.com/users/516277/icer

How can I adjust the server to run my PHP script quicker?
How can I re-code my php script to run as quickly as possible?
How to run cURL once, checking domain availability in a loop? Help fixing code please
Help fixing php/api/curl code please
How to reduce virtual memory by optimising my PHP code?
Overlapping HTTPS requests?
Multiple https requests.. how to?

您不得不一遍又一遍地问同样的问题这一事实是否告诉您 you're doing it wrong ？

你的 This comment:

@mario: Cheers. I'm competing against 2 other companies for specific ccTLD's. They are new to the game and they are snapping up those domains in slow time (up to 10 seconds after purge time). I'm just a little slower at the moment.

如果你真的想击败两家公司抢购过期域名，我相当确定在共享主机帐户上使用 PHP 是错误的工具。