php通过文件下载来计算网络速度,源代码如下:

<?php

$  = \'http://speed.bezeqint.net/big.zip\';
$start = time();
$size = filesize($ );
$file = file_get_contents($ );
$end = time();
/*  http://www.manongjc.com/article/1421.html */
$time = $end - $start;
$size = $size / 1048576;
$speed = $size / $time;
echo \"Server\'s speed is: $speed MB/s\";

?>
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