Help With Fopen/fread Code Optimization To Lower Cpu Usage

[me4ka86]

Hello everyone,

 

i need some help with a file of mine. Basically i want to get a file from another server and pass it to my visitors. The server i download from changes the download speed, in the beginning it is 300kb/s and then it falls gradually to 50kb/s. I want to provide the file as fast as possible to my visitors. Now the real problem is the CPU usage. If i use sleep it gets too slow and is not optimal for the visitors, without sleep the cpu runs very high. What would you suggest so that i download the file with exactly the speed i am provided and not to overload the cpu with unneeded processes? Thanks. Here is the code i use

 

header("Content-type:....");

header('Content-Disposition: attachment; filename="....."');

header("Content-Length: .......");

 

$s = fopen($url,"rb");

 

 

while (!feof($s)) {

 

echo fread($s, 32* 1024);

flush();

 

}

 

fclose($s);

Edited October 15, 2012 by me4ka86

[kicken]

If all you want to do is pass-through the file without modifying it, use the readfile function.

 

header("Content-type:....");
header('Content-Disposition: attachment; filename="....."');
header("Content-Length: .......");

readfile($url);

[me4ka86]

i think that solved the cpu issue! thanks