Windows – generowanie UUID

PowerShell

[guid]::NewGuid().ToString()

9604d3a8-e390-41fa-8863-01fca67adb3c

PHP – 32 bajty

# php -r "echo base64_encode(random_bytes(32));"

O5PPyu3QZtfZD5f6Oj2WaxZdux2k4OJ1vcy0Y4jomJk=

.... gdzieś w kodzie ...
$str = base64_decode($var);