What are some potential pitfalls when using the filesize() function in PHP to calculate the disk space usage of a website?

One potential pitfall when using the filesize() function in PHP to calculate the disk space usage of a website is that it may not accurately account for the total size of all files due to symbolic links or other file system quirks. To ensure a more accurate calculation, it is recommended to recursively iterate through directories and sum up the sizes of all files. 

function getDirectorySize($path) {
    $totalSize = 0;
    
    foreach(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)) as $file) {
        $totalSize += $file->getSize();
    }
    
    return $totalSize;
}

$websitePath = '/path/to/website';
$totalSize = getDirectorySize($websitePath);
echo "Total disk space usage of website: " . $totalSize . " bytes";

Keywords

filesize disk space PHP website calculation

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