Array
(
    [0] => bt80
    [1] => 8jf
)
<p>Input string = bt808jf <br />Proper Postcode = BT80 8JF</p>Array
(
    [0] => bt1
    [1] => 5pt
)
<p>Input string = bt15pt <br />Proper postcode = BT1 5PT</p>BT12  6JS