后端开发|php教程
php,DateDiff,DateAdd
后端开发-php教程
扩展php中的时间函数DateDiff和DateAdd
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function DateDiff($part, $begin, $end){$diff = strtotime($end) - strtotime($begin);switch($part){case "y": $retval = bcdiv($diff, (60 * 60 * 24 * 365)); break;case "m": $retval = bcdiv($diff, (60 * 60 * 24 * 30)); break;case "w": $retval = bcdiv($diff, (60 * 60 * 24 * 7)); break;case "d": $retval = bcdiv($diff, (60 * 60 * 24)); break;case "h": $retval = bcdiv($diff, (60 * 60)); break;case "n": $retval = bcdiv($diff, 60); break;case "s": $retval = $diff; break;}return $retval;}function DateAdd($part, $number, $date){$date_array = getdate(strtotime($date));$hor = $date_array["hours"];$min = $date_array["minutes"];$sec = $date_array["seconds"];$mon = $date_array["mon"];$day = $date_array["mday"];$yar = $date_array["year"];switch($part){case "y": $yar += $number; break;case "q": $mon += ($number * 3); break;case "m": $mon += $number; break;case "w": $day += ($number * 7); break;case "d": $day += $number; break;case "h": $hor += $number; break;case "n": $min += $number; break;case "s": $sec += $number; break;}return date("Y-m-d H:i:s", mktime($hor, $min, $sec, $mon, $day, $yar));}Function DateAdd($part, $n, $date){switch($part){case "y": $val = date("Y-m-d H:i:s", strtotime($date ." +$n year")); break;case "m": $val = date("Y-m-d H:i:s", strtotime($date ." +$n month")); break;case "w": $val = date("Y-m-d H:i:s", strtotime($date ." +$n week")); break;case "d": $val = date("Y-m-d H:i:s", strtotime($date ." +$n day")); break;case "h": $val = date("Y-m-d H:i:s", strtotime($date ." +$n hour")); break;case "n": $val = date("Y-m-d H:i:s", strtotime($date ." +$n minute")); break;case "s": $val = date("Y-m-d H:i:s", strtotime($date ." +$n second")); break;}return $val;}
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