measuring response times


I am running php on free bsd . I am using curl to make a call to webservice. I want to measure the time it took to get back the response

how do i do it?

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Hugh FraserConsultantCommented:
If you're using the php cURL bindings, you can use the microtime function to get a very accurate timestamp before and after the web page is retrieved, and calculate the delta.

If you're looking for a way to monitor the response time on a regular basis, look at a tool like OpenNMS to track it.

 * Simple function to replicate PHP 5 behaviour
function microtime_float()
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "");
curl_setopt($ch, CURLOPT_HEADER, 0);
//record time right before sending request
$time_start = microtime_float();
//send request
//record time right after request
$time_end = microtime_float();
$time = $time_end - $time_start;
echo "request took $time seconds\n";

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VlearnsAuthor Commented:
are the time units correct, is it really seconds?
Hugh FraserConsultantCommented:
Yes. The results are in seconds. I take it they are longer than you expected?
>>are the time units correct, is it really seconds?
In case you need "confirmation", "Yes", the units are seconds.
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