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@ 2014-09-09T15:20:56Z

<?php
$adv = True;
$licnum = 'L123';
if ($adv &! preg_match("/^P/", $licnum)){
	echo "yes";
}else{
	echo "No";
}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive preview

67.93 ms | 402 KiB | 5 Q