intermediate_image_sizes filter-hook . WP 2.5.0

Filters the list of intermediate image sizes.

Usage

add_filter( 'intermediate_image_sizes', 'filter_function_name_2767' );
function filter_function_name_2767( $default_sizes ){
	// filter...

	return $default_sizes;
}

$default_sizes(string[])

An array of intermediate image size names.
Default: are 'thumbnail', 'medium', 'medium_large', 'large'

Where the hook is called

return apply_filters( 'intermediate_image_sizes', $default_sizes );

Where in WP core the hook is used WordPress

add_filter( 'intermediate_image_sizes', array( $this, 'intermediate_image_sizes' ) );