/** * by hkshadow * Enter description here ... * @param 1 or 30 $i */ function GetPurMonth($date) { //获取指定日期上个月的第一天和最后一天 $time = strtotime ( $date ); $firstday = date ( 'Y-m-01', strtotime ( date ( 'Y', $time ) . '-' . (date ( 'm', $time ) - 1) . '-01' ) ); $lastday = date ( 'Y-m-d', strtotime ( "$firstday +1 month -1 day" ) ); return array ($firstday, $lastday ); } /** * by hkshadow * Enter description here ... * @param 1 or 30 $i */ function GetNextMonth($date) { //获取指定日期下个月的第一天和最后一天 $arr = getdate (); if ($arr ['mon'] == 12) { $year = $arr ['year'] + 1; $month = $arr ['mon'] - 11; $day = $arr ['mday']; if ($day < 10) { $mday = '0' . $day; } else { $mday = $day; } $firstday = $year . '-0' . $month . '-01'; $lastday = $year . '-0' . $month . '-' . $mday; } else { $time = strtotime ( $date ); $firstday = date ( 'Y-m-01', strtotime ( date ( 'Y', $time ) . '-' . (date ( 'm', $time ) + 1) . '-01' ) ); $lastday = date ( 'Y-m-d', strtotime ( "$firstday +1 month -1 day" ) ); } return array ($firstday, $lastday ); }