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@ 2014-06-18T15:43:13Z

<?php

function returnFirst($rsrnum) {
    $char = $rsrnum[0];
    return ctype_alpha($char) ? strtolower($char) : '%23';
}

echo returnFirst('ADSASTEADS')."\n";
echo returnFirst('2342342')."\n";
echo returnFirst('3SASDAsd')."\n";

Output
Performance
VLD
References
Branches

ctype_alpha: documentation ( source)
strtolower: documentation ( source)

preferences:dark modelive preview

50.16 ms | 402 KiB | 5 Q