adjacent_image_link()

adjacent_image_link() — Displays next or previous image link that has the same post parent. Retrieves the current attachment object from the $post global.

Inputs: $prev (bool): Optional. Whether to display the next (false) or previous (true) link. Default true. $size (string|int[]): Optional. Image size. Accepts any registered image size name, or an array of width and height values in pixels (in that order). Default ‘thumbnail’. $text (bool): Optional. Link text. Default false.