2 /* Prototype : DateTime date_modify ( DateTime $object , string $modify )
3 * Description: Alter the timestamp of a DateTime object by incrementing or decrementing in a format accepted by strtotime().
4 * Source code: ext/date/php_date.c
5 * Alias to functions: public DateTime DateTime::modify()
8 //Set the default time zone
9 date_default_timezone_set("Europe/London");
11 echo "*** Testing date_modify() : basic functionality ***\n";
13 // Create a date object to modify
14 $datetime = date_create("2009-01-31 14:28:41");
16 date_modify($datetime, "+1 day");
17 echo "After modification 1: " . date_format($datetime, "D, d M Y") . "\n";
19 date_modify($datetime, "+1 week 2 days 4 hours 2 seconds");
20 echo "After modification 2: " . date_format($datetime, "D, d M Y H:i:s") . "\n";
22 date_modify($datetime, "next Thursday");
23 echo "After modification 3: " . date_format($datetime, "D, d M Y") . "\n";
25 date_modify($datetime, "last Sunday");
26 echo "After modification 4: " . date_format($datetime, "D, d M Y") . "\n";