WordPress at a glance
filter is not described

wp_constrain_dimensions filter-hook . WP 4.1.0

Filters dimensions to constrain down-sampled images to.


add_filter( 'wp_constrain_dimensions', 'filter_function_name_8792', 10, 5 );
function filter_function_name_8792( $dimensions, $current_width, $current_height, $max_width, $max_height ){
	// filter...

	return $dimensions;
The image width and height.
The current width of the image.
The current height of the image.
The maximum width permitted.
The maximum height permitted.

Where the hook is called

wp-includes/media.php 472
return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height );

Where the hook is used (in WP core)

Does not used.