Display WordPress Archive Lists By Specific Year or Month

WordPress has wp_get_archives function to display date-based archives list. Here is the default args for wp_get_archives:

$args = array(
'type' => 'monthly',
'limit' => ,
'format' => 'html',
'before' => ,
'after' => ,
'show_post_count' => false,
'echo' => 1
);

I can choose whether archive should be displayed yearly, monthly, daily or weekly by passing type argument.

The Problem

Unfortunately I ‘CAN NOT’ filter archive only on specific date, in this case I want to display monthly archive on year 2011. I have googled this problem but no luck.

The solution

Then I went into the code in the file where the wp_get_archives function is located, and found this filer hook ‘$where = apply_filters( 'getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );‘

That is the filter I was looking for, so I created this callback.

function takien_archive_where($where,$args){
$year = isset($args['year']) ? $args['year'] : ";
$month = isset($args['month']) ? $args['month'] : ";
$monthname = isset($args['monthname']) ? $args['monthname']: ";
$day = isset($args['day']) ? $args['day'] : ";
$dayname = isset($args['dayname']) ? $args['dayname'] : ";
if($year){
$where .= " AND YEAR(post_date) = '$year' ";
$where .= $month ? " AND MONTH(post_date) = '$month' " : ";
$where .= $day ? " AND DAY(post_date) = '$day' " : ";
}

if($month){
$where .= " AND MONTH(post_date) = '$month' ";
$where .= $day ? " AND DAY(post_date) = '$day' " : ";
}

if($monthname){

$where .= " AND MONTHNAME(post_date) = '$monthname' ";

$where .= $day ? " AND DAY(post_date) = '$day' " : ";

}

if($day){

$where .= " AND DAY(post_date) = '$day' ";

}

if($dayname){

$where .= " AND DAYNAME(post_date) = '$dayname' ";

}

return $where;

}

Now, I have additional arguments than can be passed to wp_get_archives function:

• year (string), year to display, eg 2011
• month (string), monthnum to display, eg 2 for February
• monthname (string), month name to display, eg January
• day (string), day of month to display, eg 9
• dayname (string), day name to display, eg Sunday

Usage

//This is example to display archive list on year 2010.

//call the filter early before any output, the best place is in functions.php

add_filter( 'getarchives_where','takien_archive_where',10,2);

/* place the following code at where output to be displayed.*/

//display the archive list monthly based, on year 2010

//set the arguments

$args = array(

'type' => 'monthly',

'echo' => 0,

'year' => '2010'

);

//render the output

echo '

Monthly archive 2010

';

echo '<ul>'.wp_get_archives($args).'</ul>';

//display the archive list daily based, on February 2011

$args = array(

'type' => 'daily',

'echo' => 0,

'year' => '2011',

'month' => '12'

);

echo '

Daily archive December, 2011

';

echo '<ul>'.wp_get_archives($args).'</ul>';

//set the arguments

$args = array(

'type' => 'daily',

'echo' => 0,

'month' => '1'

);

echo '

Daily archive January, all years

';

echo '<ul>'.wp_get_archives($args).'</ul>';

If there’s post on that specific date, the output result should look like this:

In fact, you may add other MySQL date-time function to the arguments, see this for reference.

Good luck.