File Size

Displays the file size in bytes, kilobytes, megabytes, and gigabytes depending on the size of the file.

<?php
function display_size($file){
$file_size = filesize($file);
if($file_size >= 1073741824)
{
$file_size = round($file_size / 1073741824 * 100) / 100 . "g";
}
elseif($file_size >= 1048576)
{
$file_size = round($file_size / 1048576 * 100) / 100 . "m";
}
elseif($file_size >= 1024)
{
$file_size = round($file_size / 1024 * 100) / 100 . "k";
}
else{
$file_size = $file_size . "b";
}
return $file_size;
}
?>