Allow wp_tag_cloud() to accept an array of taxonomies

[sorich87]

Allow wp_tag_cloud() to accept an array of arguments.

[sorich87]

Added patch

[scribu]

Your patch makes sense, but it doesn't match with the description.

When is $tag->taxonomy ever an array?

[sorich87]

It is actually assumed that $args['taxonomy'] is always a string. So, it is passed to get_term_link() which only accept a string as second argument.

When $args['taxonomy'] is not a string but an array, we get an error.

Replacing $args['taxonomy'] by $tag->taxonomy fixes the issue.

[scribu]

Could you provide some steps to reproduce the error?

[sorich87]

The following code will produce the error:

$args = array(
    'taxonomy' => array( 'category', 'post_tag' )
);
wp_tag_cloud( $args );

[sorich87]

The suggested change will allow tag clouds of several taxonomies.

It was inspired by: ​http://wordpress.stackexchange.com/questions/3540/how-do-i-display-a-tag-cloud-with-both-post-tags-and-a-custom-taxonomy/3541#3541

[scribu]

(In [16180]) Allow tag cloud using multiple taxonomies. Props sorich87. Fixes #15313