wp-admin/includes/media.php:1286Retrieves HTML for the Link URL buttons with the default link type as specified.
$postWP_Post$url_typestringoptional''stringfunction image_link_input_fields( $post, $url_type = '' ) { $file = wp_get_attachment_url( $post->ID ); $link = get_attachment_link( $post->ID ); if ( empty( $url_type ) ) { $url_type = get_user_setting( 'urlbutton', 'post' ); } $url = ''; if ( 'file' === $url_type ) { $url = $file; } elseif ( 'post' === $url_type ) { $url = $link; } return " <input type='text' class='text urlfield' name='attachments[$post->ID][url]' value='" . esc_attr( $url ) . "' /><br /> <button type='button' class='button urlnone' data-link-url=''>" . __( 'None' ) . "</button> <button type='button' class='button urlfile' data-link-url='" . esc_url( $file ) . "'>" . __( 'File URL' ) . "</button> <button type='button' class='button urlpost' data-link-url='" . esc_url( $link ) . "'>" . __( 'Attachment Post URL' ) . '</button>';}Introduced in 2.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.