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@ 2022-07-16T13:29:54Z

<?php

$UUID = "f9e113324bd449809b98b0925eac3141";

echo preg_replace('/(?:^.{4})?.{4}\K/', '-', $UUID, 4);

Output
Performance
VLD
References
Branches

preg_replace: documentation ( source)

preferences:dark modelive previewkey bindings

26.41 ms | 404 KiB | 5 Q