Can someone give me a working example of what my code should be as my efforts are getting me nowhere?
My code currently says have
if (isset($_POST['startdate'])) {
    $startdate = DatePickerToTime($_POST['startdate']);
} else { 
    $startdate = strtotime('today midnight');
}
and
if (isset($_POST['enddate'])) { 
    $enddate = DatePickerToTime($_POST['enddate']);
} else { 
    $enddate = time();
}
which works.
However, I want to say if startdate is equal to enddate then add 23 hours and 59 minutes to enddate
I have read the documentation and am trying
if($_POST['$startdate'] == $_POST['$enddate']) {
    $_POST['$enddate'] += date("h:i:sa", "23:59:59");
}
but this doesn't work.
 
     
    