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@ 2015-05-08T13:53:46Z

<?php
$fileName = 'ORSTAT20150508134858016';
if(preg_match("/^ORSTAT/", $fileName)) {
                echo true;
            }

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive preview

46.95 ms | 402 KiB | 5 Q