How to form an array for query from URL with multiple parameters

Question

This is on the second page of a filter that I am making, on the first page the user is able to select check-boxes. The values of the check-boxes get passed to the second page by parameters in the URL: filter-result/?mytaxonomy=myterm&mytaxonomy=myotherterm How to form an array of this data to use in a (WP) query?

I'm able to display the data from the URL by doing this:

    if( isset( $_GET['mytaxonomy'] ) ){
        foreach( $_GET['mytaxonomy'] as $term ){
            echo $term . '<br>';
        }
    }

I am also able to query posts (custompost-type):

    $query = new WP_Query( array(
        'post_type' => 'mycustomposttype',
        'tax_query' => array(
            array(
                'taxonomy' => 'mytaxonomy',
                'field' => 'slug',
                'terms' => array( 'myterm', 'myotherterm' ),
                'operator' => 'AND',
            ),
        ),
    ) );

I want to pass the data from $_GET['mytaxonomy'] to 'terms' => array( *inside here* ).

When I use print_r ($_GET['mytaxonomy']); the result is Array ( [0] => myterm ), All correct. I guess I just need to form the array to 'a', 'b' to work in the WP query. How can I achieve this?

Vincent · Accepted Answer · 2019-01-20 20:14:01Z

1

For others that may question how to go about this: this was an easy fix. Because as @Wodka suggested, I formed the link with [] brackets like such: <input type="checkbox" name="mytaxonomy[]" value="myterm"> and because $_GET['mytaxonomy'] outputs an array() itself, I was able to just drop it in like below.

'terms' => $_GET['mytaxonomy'],

Which resulted in:

$query = new WP_Query( array(
    'post_type' => 'mycustomposttype',
    'tax_query' => array(
        array(
            'taxonomy' => 'mytaxonomy',
            'field' => 'slug',
            'terms' => $_GET['mytaxonomy'],
            'operator' => 'AND',
        ),
    ),
) );

answered Jan 20, 2019 at 20:14

Vincent

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Comments

wodka · Accepted Answer · 2019-01-20 10:25:57Z

0

You can pass array to php like filter-result/?mytaxonomy[]=myterm&mytaxonomy[]=myotherterm - the syntax you used is from the java world (and not applicable to php)

answered Jan 20, 2019 at 10:25

wodka

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1 Comment

Vincent Over a year ago

That is actually how I did form the URL. On the first page, there is a form with: <label><input type="checkbox" name="mytaxonomy[]" value="myterm">myterm</label>.

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