`sizeof`: A Small Evolution CMS Snippet for Human-Readable File Sizes

Small utility snippets were a big part of the old Evolution ecosystem. One good example is sizeof, a tiny helper that reads a file path and returns a human-readable size.

The Original Use Case

The snippet was designed for cases where a file TV pointed to a downloadable document and the template needed to show the file size next to the link.

[[sizeof? &path=`[*tex-doc*]`]]

with coming from a file-type TV.

The Core Logic

<?php
function format_size($size) {
    $metrics = array('', 'KB', 'MB', 'GB', 'TB');
    $metric = 0;

    while (floor($size / 1024) > 0) {
        ++$metric;
        $size /= 1024;
    }

    return round($size, 1) . ' ' . (isset($metrics[$metric]) ? $metrics[$metric] : '??');
}

if (file_exists($path)) {
    $output = format_size(filesize($path));
}

return $output;

Why This Was Useful

• download links become more informative
• editors do not need to enter file sizes manually
• the display stays correct when files are replaced

This is a good example of the kind of small focused helper that made template output feel more polished without adding unnecessary complexity.

Source: Utilities category on Extras.Evolution.