PHP Date Function Example: Get the last day of the month

/** * Date-get last day of the month * @return int */ Public Function Get_lastday () { if ($this->month==2) { $lastday = $this->is_leapyear ($this->year)? 29:28; } elseif ($this->month==4 | | $this->month==6 | | $this->month==9 | | $this->month==11) { $lastday = 30; } else { $lastday = 31; } return $lastday; } /** * PHP Date-Whether it is a leap year * @return int */ Public Function Is_leapyear ($year) { Return date (' L ', $year); } Copy Code example, the PHP date function calculates a difference of 2 dates /** * PHP Date-Calculates the difference of 2 dates * @return int */ Public Function Get_difference ($date, $new _date) { $date = Strtotime ($date); $new _date = strtotime ($new _date); Return ABS (Ceil ($date-$new _date)/86400); } Copy Code

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