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@ 2019-02-18T22:59:12Z

<?php

$sFullPermComment = 'YNYNYNN';
preg_match("/^(.).....(?!\\1).$/", $sFullPermComment,$matches);
                        echo print_r($matches, true);

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

28.7 ms | 402 KiB | 5 Q