PHP date formatting, date calculation, and getting the current week, month, and end date _ PHP Tutorial

PHP date formatting, date calculation, and obtaining the start and end dates of the current week and month. PHP date formatting and date calculation as well as getting the current week, month header and end date PHP date format and date calculation as well as the PHP date format sample code when obtaining the previous week, month header and end date: ** PHP date formatting, date calculation, and obtaining the start and end dates of the current week and month
PHP date formatting and date calculation, and when obtaining the previous week, month and end date

PHP date formatting sample code:

/ **
     * Formatting time
     * $ type: type
     * $ strDate: time string to be processed
     *
     * Year Y: four-digit year y: two-digit year
     * Month m: two-digit month n: one-digit month M: English month
     * Date d: Two-digit date j: One-digit date D: English date
     * Hour: H, minute: i, second: s
     ** /
    public function GetFormatDate ($ type = 1, $ strDate = '') {
            $ time = time ();
            if (isset ($ strDate) &&! empty ($ strDate)) {
                $ time = strtotime ($ strDate);
            }

            switch ($ type) {
                case 1:
                   return date ("H: i", $ time);
                case 2:
                    return date ("m month d H: i", $ time);
                case 3:
                    return date ("m / d H: i", $ time);
                case 4:
                    return date ("Y: m, d, H: i", $ time);
                case 5:
                    return date ("Y / m / d H: i", $ time);
                case 6:
                    return date ("H: i: s", $ time)
                case 7:
                    return date ("Y-m-d H: i: s", $ time);
                case 8:
                    return date ("Y / m / d H: i: s", $ time);
                default:
                    return $ strDate;
            }
    }

Date calculation sample code:

/ **
      * Time addition and subtraction processing
      * $ strDate: time string to be processed
      * $ days: number of days
      ** /
     public function ChangeDate ($ strDate, $ days) {
           $ time = time ();
           if (isset ($ strDate) &&! empty ($ strDate)) {
               $ time = strtotime ($ strDate);
           }

          return date ('Y-m-d H: i: s', strtotime ("$ days day", $ time));
     }

Sample code for obtaining the start and end dates of the current week and month:

/ **
     * Get the beginning and end of the current week and month
     *
     * $ dateArr ['W1']: Monday
     * $ dateArr ['W7']: Weekend
     * $ dateArr ['M1']: month head
     * $ dateArr ['M2']: end of the month
     ** /
    public function GetCurrentDateInfo () {
       $ dayTimes = 24 * 60 * 60;
       $ dateArr = []; $ temp = '';

       $ weekIndex = (int) date ('w');
       switch ($ weekIndex) {
            case 0:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('+ 1 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 7 day'));
                break;
            case 1:
                $ dateArr ['W1'] = date ('Y-m-d 00:00:00');
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 6 day'));
                break;
            case 2:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('-1 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 5 day'));
                break;
            case 3:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('-2 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 4 day'));
                break;
            case 4:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('-3 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 3 day'));
                break;
            case 5:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('-4 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 2 day'));
                break;
            case 6:
                $ dateArr ['W1'] = date ('Y-m-d 00: 00: 00', strtotime ('-5 day'));
                $ dateArr ['W7'] = date ('Y-m-d 23: 59: 59', strtotime ('+ 1 day'));
                break;
        }


       // 1-12: January to December
       $ monthIndex = (int) date ('m');
       switch ($ monthIndex) {
           case 1:
               $ temp = date ('Y-02-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 2:
               $ temp = date ('Y-03-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 3:
               $ temp = date ('Y-04-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 4:
               $ temp = date ('Y-05-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 5:
               $ temp = date ('Y-06-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 6:
               $ temp = date ('Y-07-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 7:
               $ temp = date ('Y-08-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 8:
               $ temp = date ('Y-09-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 9:
               $ temp = date ('Y-10-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 10:
               $ temp = date ('Y-11-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 11:
               $ temp = date ('Y-12-01 00:00:00');
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
           case 12:
               $ temp = date ((date ('Y') + 1). "-01-01 00:00:00");
               $ dateArr ['M1'] = date ('Y-m-01 00:00:00');
               $ dateArr ['M2'] = date ('Y-m-d 23: 59: 59', strtotime ($ temp)-$ dayTimes);
               break;
       }


       return $ dateArr;
    } 

The above code is for reference only. please point out the omissions for improvement!

Http://www.bkjia.com/PHPjc/905600.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/905600.htmlTechArticlePHP date formatting and date calculation as well as getting the current week, beginning and end date PHP datetime and date calculation and when getting the previous week, beginning and end date PHP datetime sample code: /**...