wp-includes/media.php:875Gets the available intermediate image size names.
string[]One hook fires while get_intermediate_image_sizes() runs, in this order:
Filters the list of intermediate image sizes.
function get_intermediate_image_sizes() { $default_sizes = array( 'thumbnail', 'medium', 'medium_large', 'large' ); $additional_sizes = wp_get_additional_image_sizes(); if ( ! empty( $additional_sizes ) ) { $default_sizes = array_merge( $default_sizes, array_keys( $additional_sizes ) ); } /** * Filters the list of intermediate image sizes. * * @since 2.5.0 * * @param string[] $default_sizes An array of intermediate image size names. Defaults * are 'thumbnail', 'medium', 'medium_large', 'large'. */ return apply_filters( 'intermediate_image_sizes', $default_sizes );}Introduced in 3.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.