使脚本部分超时并允许其余部分继续

发布于 2024-10-15 05:43:25 字数 571 浏览 4 评论 0原文

我有一个在我的主页上运行的小部件，它从外部源加载 xml 数据。我想在 x 秒后使 xml 加载超时（最近另一个站点出现了加载问题）。这是我到目前为止所拥有的功能。我不知道如何使计时器与 simplexml_load_file() 无效。

我走在正确的轨道上吗？有办法让这项工作发挥作用吗？或者有更好的方法来做到这一点吗？如果超时，我仍然需要页面的其余部分继续加载，所以我不能使用 set_time_limit()，因为这将结束所有脚本执行，对吧？

function timer($end) {
    $count = 0;
    while($end > $count) {
        sleep(1);
        $count++;
    }
    return true;
}

$we = simplexml_load_file('http://forecast.weather.gov/MapClick.php?lat=44.08920&lon=-70.17250&FcstType=xml');
if(timer(3)) return;

原文

I have a widget that runs on my homepage which is loading xml data from an external source. I want to timeout the xml load after x seconds (lately the other site has been having load issues). Here is the function I have so far. I can't figure out how to make the timer ineract with the simplexml_load_file().

Am I on the right track? Is there a way to make this work? Or is there a better way to do this? If this does timeout, I still need the rest of the page to continue loading, so I can't use set_time_limit(), because that will end all script execution, right?

function timer($end) {
    $count = 0;
    while($end > $count) {
        sleep(1);
        $count++;
    }
    return true;
}

$we = simplexml_load_file('http://forecast.weather.gov/MapClick.php?lat=44.08920&lon=-70.17250&FcstType=xml');
if(timer(3)) return;

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终难遇 2024-10-22 05:43:25

因此，您需要为 simplexml_load_file() 设置超时。您无法具体设置它，但您可以在使用该函数之前全局设置它（对于所有基于套接字的流）：

ini_set('default_socket_timeout', 3);
$we = simplexml_load_file($url);

// you can restore the default value after use, if you want
ini_restore('default_socket_timeout');

So you want to set a timeout for simplexml_load_file(). You can't set it specifically, but you can just set it globally (for all socket based streams) before using the function:

ini_set('default_socket_timeout', 3);
$we = simplexml_load_file($url);

// you can restore the default value after use, if you want
ini_restore('default_socket_timeout');

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迷爱 2024-10-22 05:43:25

我会使用 CURL 而不是直接加载 URL...

function getXml($url, $timeout = 0){
  $ch = curl_init($url);

  curl_setopt_array($ch,array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => (int) $timeout
  ));

  if($xml = curl_exec($ch)){
    return new SimpleXmlElement($xml);
  }
  else {
    return null;
  }
}

//Example
$xmlData = getXml('http://yoururl.com', 2); // 2 second timeout

I would use CURL instead of loading the URL directly...

function getXml($url, $timeout = 0){
  $ch = curl_init($url);

  curl_setopt_array($ch,array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => (int) $timeout
  ));

  if($xml = curl_exec($ch)){
    return new SimpleXmlElement($xml);
  }
  else {
    return null;
  }
}

//Example
$xmlData = getXml('http://yoururl.com', 2); // 2 second timeout

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