WordPress at a glance
filter is not described

iis7_url_rewrite_rules filter-hook . WP 2.8.0

Filters the list of rewrite rules formatted for output to a web.config.

Usage

add_filter( 'iis7_url_rewrite_rules', 'filter_function_name_5117' );
function filter_function_name_5117( $rules ){
	// filter...

	return $rules;
}
$rules(string)
Rewrite rules formatted for IIS web.config.

Where the hook is called

WP_Rewrite::iis7_url_rewrite_rules()
iis7_url_rewrite_rules
wp-includes/class-wp-rewrite.php 1573
return apply_filters( 'iis7_url_rewrite_rules', $rules );

Where the hook is used (in WP core)

Does not used.