function fix_slash( $string, $type ) { global $wp_rewrite; if ( $wp_rewrite->use_trailing_slashes == false ) { if ( $type != 'single' && $type != 'category' ) return trailingslashit( $string ); if ( $type == 'single' && ( strpos( $string, '.html/' ) !== false ) ) return trailingslashit( $string ); if ( $type == 'category' && ( strpos( $string, 'category' ) !== false ) ) { $aa_g = str_replace( "/category/", "/", $string ); return trailingslashit( $aa_g ); } if ( $type == 'category' ) return trailingslashit( $string ); } return $string; } add_filter( 'user_trailingslashit', 'fix_slash', 55, 2 );