February 12, 2011 
Definition:
function is_tax( $taxonomy = '', $term = '' ) {}
Is the query for a taxonomy archive page?
If the $taxonomy parameter is specified, this function will additionally check if the query is for that specific $taxonomy.
Parameters
- mixed $taxonomy: Optional. Taxonomy slug or slugs.
- mixed $term: Optional. Term ID, name, slug or array of Term IDs, names, and slugs.
Source code
function is_tax( $taxonomy = '', $term = '' ) {
global $wp_taxonomies;
if ( !$this->is_tax )
return false;
if ( empty( $taxonomy ) )
return true;
$queried_object = $this->get_queried_object();
$tax_array = array_intersect( array_keys( $wp_taxonomies ), (array) $taxonomy );
$term_array = (array) $term;
if ( empty( $term ) ) // Only a Taxonomy provided
return isset( $queried_object->taxonomy ) && count( $tax_array ) && in_array( $queried_object->taxonomy, $tax_array );
return isset( $queried_object->term_id ) &&
count( array_intersect(
array( $queried_object->term_id, $queried_object->name, $queried_object->slug ),
$term_array
) );
}
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