WordPress at a glance
function is not described

_wp_filter_taxonomy_base() WP 2.6.0

Filters the URL base for taxonomies.

To remove any manually prepended /index.php/.

No Hooks.

Return

String.

Usage

_wp_filter_taxonomy_base( $base );
$base(string) (required)
The taxonomy base that we're going to filter

Changelog

Since 2.6.0 Introduced.

Code of wp filter taxonomy base: wp-includes/rewrite.php WP 5.2.3

<?php
function _wp_filter_taxonomy_base( $base ) {
	if ( ! empty( $base ) ) {
		$base = preg_replace( '|^/index\.php/|', '', $base );
		$base = trim( $base, '/' );
	}
	return $base;
}