PHP Date-Get the last day of the month

1     /**2 * Date-get last day of the month3 * @return int4      */5      Public functionGet_lastday () {6         if($this->month==2) {7             $lastday=$this->is_leapyear ($this->year)? 29:28;8}ElseIf($this->month==4 | |$this->month==6 | |$this->month==9 | |$this->month==11) {9             $lastday= 30;Ten}Else { One             $lastday= 31; A         } -         return $lastday; -     } the      -  -      -     /** + * Date-whether it is a leap year - * @return int +      */ A      Public functionIs_leapyear ($year) { at         return Date(' L ',$year); -}

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