Creating timestamp based on time : PHP -

i have create timestamp 8 pm everyday compare timestamp in database. how can create it?

$ts = '2015-05-12 12:00:20' have stored in database.

i need $ts_8pm = '2015-05-12 20:00:00' can take action when meets.

it easier create dynamically each day:

// date-time have value of 'now' $datetime = new datetime(); // override current time $datetime->settime(20, 0); $timestamp = $datetime->gettimestamp(); 

parsing string makes little sense, have generate string first.