How to insert things like “now() -interval '2 minutes'” into PHP PDO query?

Question

I have a query like this: (on Postgresql 8.4, PHP-fpm 5.3.10 (fpm-fcgi))

select * from users where now() - interval \'2 minutes\' < seenlast ORDER BY seen         


        

Answer 1

Intervals can be multiplied by numbers. So one approach to this is to prepare the statement saying interval '1 minute' * :myminutes instead, passing the "myminutes" parameter as a simple integer.