function get_all_category_ids() {}

Retrieves all category IDs.

Return values

returns:of all of the category IDs.

Source code

function get_all_category_ids() {

	if ( ! $cat_ids = wp_cache_get( 'all_category_ids', 'category' ) ) {

		$cat_ids = get_terms( 'category', array('fields' => 'ids', 'get' => 'all') );

		wp_cache_add( 'all_category_ids', $cat_ids, 'category' );


	return $cat_ids;



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