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@ 2013-10-08T13:01:04Z

<?php
$pattern="/^20[12345][34567890]-\d{2}-\d{2}$/";
if(preg_match($pattern,"1913-09-10"))
{
    echo "in";
}
?>

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive preview

34.2 ms | 402 KiB | 5 Q