WordPress at a glance
function is not described

_media_states() WP 3.2.0

Outputs the attachment media states as HTML.

No Hooks.

Return

String. Media states string.

Usage

_media_states( $post, $echo );
$post(WP_Post) (required)
The attachment post to retrieve states for.
$echo(true/false)
Whether to echo the post states as an HTML string.
Default: true

Changelog

Since 3.2.0 Introduced.
Since 5.6.0 Added the $echo parameter and a return value.

Code of _media_states() WP 5.6

<?php
function _media_states( $post, $echo = true ) {
	$media_states        = get_media_states( $post );
	$media_states_string = '';

	if ( ! empty( $media_states ) ) {
		$state_count = count( $media_states );
		$i           = 0;

		$media_states_string .= ' &mdash; ';

		foreach ( $media_states as $state ) {
			$sep = ( ++$i === $state_count ) ? '' : ', ';

			$media_states_string .= "<span class='post-state'>$state$sep</span>";
		}
	}

	if ( $echo ) {
		echo $media_states_string;
	}

	return $media_states_string;
}