WordPress at a glance
filter is not described

post_rewrite_rules filter-hook . WP 1.5.0

Filters rewrite rules used for "post" archives.

Usage

add_filter( 'post_rewrite_rules', 'filter_function_name_7558' );
function filter_function_name_7558( $post_rewrite ){
	// filter...

	return $post_rewrite;
}
$post_rewrite(array)
The rewrite rules for posts.

Where the hook is called

WP_Rewrite::rewrite_rules()
post_rewrite_rules
wp-includes/class-wp-rewrite.php 1257
$post_rewrite = apply_filters( 'post_rewrite_rules', $post_rewrite );

Where the hook is used (in WP core)

Does not used.