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Need file size of variable in kb/mb

Posted on 2006-11-19
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Last Modified: 2010-03-05
For example 768 chars should come out to less then 1kb ...

thanks
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Question by:eroute
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5 Comments
 
LVL 43

Expert Comment

by:ravenpl
ID: 17974039
$var = 768;
$varKB = printf("%.01 KB", $var/1024); # 0.7 KB
$varKB = printf("%.02 KB", $var/1024); # 0.76 KB
$varMB = printf("%.02 MB", $var/1048576); # 0.00 MB
$varMB = printf("%.03 MB", $var/1048576); # 0.001 MB
and so on...
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LVL 43

Expert Comment

by:ravenpl
ID: 17974047
Also:
$filename = "/etc/passwd";
$var = (-s $filename);
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LVL 43

Accepted Solution

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ravenpl earned 500 total points
ID: 17974091
Aeee, self correction - every printf() change to sprintf();
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Author Comment

by:eroute
ID: 17974096
How do I have it auto return the best reply, example:

sub get_var_size {

      return sprintf("%.02 KB", length($_[0])/1024); # 0.76 KB
      
}

Sometimes the var length can be 6000 characters or 20000 ...

thanks
0
 
LVL 43

Expert Comment

by:ravenpl
ID: 17974124
sub get_KB_size {
     return sprintf("%.2f", length($_[0])/1024); # 0.76 KB
}
argh - I need more coffee in the morning. Previously forgot about the 'f' suffix. the zero sign is here optional.
Refer http://en.wikipedia.org/wiki/Printf  http://www.phim.unibe.ch/comp_doc/c_manual/C/FUNCTIONS/format.html
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