apply_filters( ‘wp_calculate_image_sizes’, string $sizes, string|int[] $size, string|null $image_src, array|null $image_meta, int $attachment_id )

Parameters

$sizesstring

A source size value for use in a 'sizes' attribute.

$sizestring|int[]

Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).

$image_srcstring|null

The URL to the image file or null.

$image_metaarray|null

The image meta data as returned by wp_get_attachment_metadata() or null.

$attachment_idint

Image attachment ID of the original image or 0.