[SOLVED] Reading filesize of a file

[Porl123]

is there a function that can do this for a URL rather than a path as it's an external image link i'm trying to validate to check that exceedingly large files aren't being set as users avatar images. thanks!

[wildteen88]

Use getimagesize maybe

[Porl123]

Yeah I thought that too but it only gives the height and width rather than the pixels, so if a user adds an animated gif it still pretty much bones the page with lag

[Porl123]

sorry not pixels, bytes*

[wildteen88]

Oh shoot. Forgot about that. There is not built in function for getting the file size remote files (only local files). However I found this custom function

http://www.phpcentral.com/207-get-filesize-remote-file.html

[thebadbad]

I would use this:

 

<?php
$url = 'URL here';
$headers = get_headers($url, 1);
$filesize = $headers['Content-Length'];
?>

Requires PHP 5. Else file_get_contents() can be used:

 

<?php
$url = 'URL here';
$filesize = strlen(file_get_contents($url));
?>

[Porl123]

Both methods work great! thanks for all the help guys

[thebadbad]

For your information, my former method is approximately twice as fast as the latter.

 

Disregard that, they take the same time to execute. My mistake

[.josh]

except that headers can be faked.

[thebadbad]

except that headers can be faked.

 

Yeah, that's right. And in this scenario it's important to be sure, so don't use the header method.