change:
$WA_fieldValuesStr = "".((isset($_POST["eventName"]))?$_POST["eventName"]:"") ."" . "|" . "".((isset($_POST["eventDate"]))?$_POST["eventDate"]:"") ."" . "|" . "".((isset($_POST["eventInfo"]))?$_POST["eventInfo"]:"") ."";
to:
$WA_fieldValuesStr = "".((isset($_POST["eventName"]))?$_POST["eventName"]:"") ."" . "|" . "".((isset($_POST["eventDate"]))?date("Y-m-d h:m:i", strtotime($_POST["eventDate"])):"") ."" . "|" . "".((isset($_POST["eventInfo"]))?$_POST["eventInfo"]:"") ."";
it can be argued both ways, if you had a text field where you where storing the date, you would not want the date format to automatically reformat it on insert, the issue only really occurs when you have a date field.