Pass multiple arrays through query string to Wordpress search

Question

I am adding some custom filtering to the Wordpress search form allowing the user to filter by different taxonomies. Everything works when a single array is passed, as in:

/?s=example&genres[]=term1&genres[]=term2

However, when a second array is added of a different taxonomy, as in...

/?s=example&genres[]=term1&genres[]=term2&keywords[]=term3&keywords[]=term4

...there are a handful of PHP errors on the search results page

Warning: strpos() expects parameter 1 to be string, array given in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1861

Warning: preg_split() expects parameter 2 to be string, array given in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1862

Warning: Invalid argument supplied for foreach() in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1863

Warning: strpos() expects parameter 1 to be string, array given in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1861

Warning: preg_split() expects parameter 2 to be string, array given in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1862

Warning: Invalid argument supplied for foreach() in /nas/wp/www/staging/pbsi/wp-includes/query.php on line 1863

Is there a better way of passing two separate arrays through a query string that would not trigger these errors?

http_build_query()

mickmackusa
– mickmackusa ♦

2021-07-27 07:34:19 +00:00
Commented Jul 27, 2021 at 7:34 — mickmackusa
– mickmackusa ♦, Commented Jul 27, 2021 at 7:34

johnnyd23 · Accepted Answer · 2015-03-20 15:20:53Z

1

The solution was to utilize a single multidimensional array for all filters. By modifying the query above to...

/?s=example&filters[genres][]=term1&filters[genres][]=term2&filters[keywords][]=term3&filters[keywords][]=term4

... I was able to retrieve the values on the search results page individually and avoid all of the errors.

$_GET["filters"]["genres"]
$_GET["filters"]["keywords"]

answered Mar 20, 2015 at 15:20

johnnyd23

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