$today = date("Y-m-d");
$expire = $row->expireDate; //from database
$today_time = strtotime($today);
$expire_time = strtotime($expire);
if ($expire_time < $today_time) { /* do Something */ }$date_now = date("Y-m-d h:i:s");
$variable = new DateTime($date_now);
$to_compare = "2018-06-01 12:48:09";
$variable1 = new DateTime($to_compare);
$difference = date_diff($variable, $variable1)->format("Difference => %Y years, %m months, %d days, %h hours, and %i minutes");
echo $difference;$today = date("Y-m-d");
$sql_query = "SELECT * FROM orders WHERE expireDate <=".strtotime($today);$date1 = new DateTime("now");
$date2 = new DateTime("tomorrow");
var_dump($date1 == $date2); // false
var_dump($date1 < $date2); // true
var_dump($date1 > $date2); // false
$date1 = "2021-01-15";
$date2 = "2021-01-18";
if ($date1 < $date2) {
echo "$date1 is earlier than $date2";
} else {
echo "$date1 is later than $date2";
}// Current timestamp is assumed, so these find first and last day of THIS month
$first_day_this_month = date('m-01-Y'); // hard-coded '01' for first day
$last_day_this_month = date('m-t-Y');
// With timestamp, this gets last day of April 2010
$last_day_april_2010 = date('m-t-Y', strtotime('April 21, 2010'));