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@ 2013-07-24T11:25:35Z

<?php
$regexp = '^V[ABC][1-5][0-9]?$';
$tests = array(
    'VA1','VA54','VB26','VC26',
    'V25','VA66','VD26','VAA24','22',
    );
foreach($tests as $t) {
    var_dump("$t -> ".preg_match($regexp, $t));
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

44.71 ms | 402 KiB | 5 Q