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filter is not described

the_guid filter-hook . WP 4.2.0

Filters the escaped Global Unique Identifier (guid) of the post.

Usage

add_filter( 'the_guid', 'filter_function_name_1249', 10, 2 );
function filter_function_name_1249( $guid, $id ){
	// filter...

	return $guid;
}
$guid(string)
Escaped Global Unique Identifier (guid) of the post.
$id(int)
The post ID.

Where the hook is called

the_guid()
wp-includes/post-template.php 190
echo apply_filters( 'the_guid', $guid, $id );

Where the hook is used (in WP core)

wp-includes/default-filters.php 216
add_filter( 'the_guid', 'esc_url' );