How can PHP functions be utilized to differentiate between files and directories when duplicating recursively via FTP?

When duplicating files and directories recursively via FTP using PHP, you can utilize the `is_dir()` function to differentiate between files and directories. By checking if a given path is a directory before duplicating its contents, you can ensure that only directories are recursively duplicated. 

function duplicateFilesRecursively($source, $destination) {
    if(is_dir($source)) {
        if(!is_dir($destination)) {
            mkdir($destination);
        }
        $files = scandir($source);
        foreach($files as $file) {
            if($file != '.' && $file != '..') {
                duplicateFilesRecursively($source . '/' . $file, $destination . '/' . $file);
            }
        }
    } else {
        copy($source, $destination);
    }
}

// Usage
duplicateFilesRecursively('/path/to/source/directory', '/path/to/destination/directory');

Keywords

PHP functions differentiate files directories FTP

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