WordPress at a glance
function is not described

image_media_send_to_editor() WP 2.5.0

Retrieves the media element HTML to send to the editor.

No Hooks.

Return

String.

Usage

image_media_send_to_editor( $html, $attachment_id, $attachment );
$html(string) (required)
$attachment_id(int) (required)
$attachment(array) (required)

Code of image media send to editor: wp-admin/includes/media.php WP 5.2.1

<?php
function image_media_send_to_editor( $html, $attachment_id, $attachment ) {
	$post = get_post( $attachment_id );
	if ( substr( $post->post_mime_type, 0, 5 ) == 'image' ) {
		$url   = $attachment['url'];
		$align = ! empty( $attachment['align'] ) ? $attachment['align'] : 'none';
		$size  = ! empty( $attachment['image-size'] ) ? $attachment['image-size'] : 'medium';
		$alt   = ! empty( $attachment['image_alt'] ) ? $attachment['image_alt'] : '';
		$rel   = ( strpos( $url, 'attachment_id' ) || $url === get_attachment_link( $attachment_id ) );

		return get_image_send_to_editor( $attachment_id, $attachment['post_excerpt'], $attachment['post_title'], $align, $url, $rel, $size, $alt );
	}

	return $html;
}