I have varchar field in database and format of that field is like '10 Feb 2016 08:26 PM'.
Now I want to fetch upcoming data, So how can i get that ?
$books = $objData->getAll("select *
First of all, as mentioned in comments you should use proper types for dates. To answer your question, it is still possible to achieve, using STR_TO_DATE mysql function.
$objData->getAll("select * from bookings where custID=".$custID."' AND unix_timestamp(STR_TO_DATE(fromTime, '%d %b %Y %h:%i %p')) > ".time());