Working with gmt

[Xtremer360]

I?m working with dates in my database that are stored as gmt date times and trying to find the function that can turn that time after I take it out into a timestamp so I can run this if statement.

if(strtotime($user_data->lock_date) > time()) 

 

How the lock_date gets set is like this:

$wait_time = time() + (60*15);
$this->users_model->lock_out_user($post_username, gmdate('Y-m-d H:i:s'), $wait_time);