php 时间处理

function getCurMonthFirstDay($date) {
        return strtotime(date('Y-m-01 00:00:00', strtotime($date)));
    }

    function getCurMonthLastDay($date) {
        return strtotime(date('Y-m-d 23:59:59', strtotime(date('Y-m-01 00:00:00', strtotime($date)) . ' +1 month -1 day')));
    }

int(1464710400) int(1467302399)