WordPress at a glance
filter is not described

_get_page_link filter-hook . WP 2.1.0

Filters the permalink for a non-page_on_front page.

Usage

add_filter( '_get_page_link', 'filter_function_name_6146', 10, 2 );
function filter_function_name_6146( $link, $post_id ){
	// filter...

	return $link;
}
$link(string)
The page's permalink.
$post_id(int)
The ID of the page.

Where the hook is called

_get_page_link()
_get_page_link
wp-includes/link-template.php 378
return apply_filters( '_get_page_link', $link, $post->ID );

Where the hook is used (in WP core)

Does not used.