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@ 2019-06-16T10:23:33Z

<?php

$str = 'FFFFRRFFFFFFFPPRRRRRRLLRLLRLLLPPFPPLPPLPPLFPPFFPFLRPFFRRLLRPFPRFFFFFFFLFDRRFRRFFFFFFFFRQEE';

$res = preg_split('/([PDQE])(?:.*\1)?/', $str);

print_r($res);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
preg_split: documentation ( source)

preferences:dark modelive previewkey bindings

111.26 ms | 1454 KiB | 5 Q