在Wordpress中的ACF中创建两个日期的显示日期范围

Question

I have two Advanced Custom Fields datepicker fields in Wordpress – a starting date and a finishing date. These are in the back end, so that my client can add/edit posts and give them a date range.

Dates below are given as dd/mm/yyyy (I'm Australian).

I need to compare the two dates to come up with a nice date range for display on the front end. It needs to:

1. Check to see whether the two dates are the same, in which case it should just output one date (e.g. start date is 20/7/2015, finish date is 20/7/2015, so output is 20 July 2015).

2. If the two dates are different but in the same month, output as dd – dd mm yyyy (e.g. start date is 10/3/2015, finish date is 25/3/2015, so output is 10 – 25 March 2015).

3. If the two dates are in different months but the same year, output as dd mm – dd mm yyyy (e.g. start date is 18/4/2015, finish date is 3/5/2015, so output is 18 April – 3 May 2015).

4. Finally, if the two dates are in different years, output as dd mm yyyy – dd mm yyyy (e.g. start date is 8/11/2015, finish date is 6/2/2016, so output is 8 November 2015 – 6 February 2016).

I can do 1 and 4 but lack the coding skills to manage 2 or 3.

I'm very surprised I couldn't find this question on SO, so if I've overlooked a duplicate please point me in the right direction.

Thanks.

Answer 1

You can use the strtotime() function to convert your date string from the meta values to a timestamp, which you can then use to compare. The timestamp can then be passed to the date() function to compare the different date parts, and eventually to format the return value.

$start_date = strtotime( '20/7/2015' );
$finish_date = strtotime( '20/8/2015' );

if ( $start_date == $finish_date ){
    // the start and finish are equal "d F Y" #1
    return date( 'd F Y', $start_date );
} else {
    // first check to see if the year is the same since it is a larger scope
    if ( date( 'Y', $start_date ) == date( 'Y', $finish_date ) ){
        // year is the same, check the month next
        if ( date( 'M', $start_date ) == date( 'M', $finish_date ) ){
            // month is the same, use "d - D F Y", #2
            return date( 'd', $start_date ) . ' - ' .  date( 'd F Y', $finish_date );
        } else {
            // month is not the same but year is a match, use "d F - d F Y", #3
            return date( 'd F', $start_date ) . ' - ' .  date( 'd F Y', $finish_date );
        }
    } else {
        // the year is not the same, use "d F Y - d F Y", #4
        return date( 'd F Y', $start_date ) . ' - ' .  date( 'd F Y', $finish_date );
    }
}