How can one accurately determine the size of a folder in PHP?

To accurately determine the size of a folder in PHP, you can recursively iterate through all files and subfolders within the folder and sum up their individual sizes. This can be achieved by using the `RecursiveIteratorIterator` and `RecursiveDirectoryIterator` classes provided by PHP. 

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

$folderPath = '/path/to/folder';
$folderSize = getFolderSize($folderPath);

echo "Size of folder $folderPath: " . $folderSize . " bytes";

Keywords

PHP folder size directory size recursive filesize.

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