wp_theme_update_row

function wp_theme_update_row( $theme_key, $theme ) {
	$current = get_site_transient( 'update_themes' );

	if ( ! isset( $current->response[ $theme_key ] ) ) {
		return false;
	}

	$response = $current->response[ $theme_key ];

	$details_url = add_query_arg(
		array(
			'TB_iframe' => 'true',
			'width'     => 1024,
			'height'    => 800,
		),
		$current->response[ $theme_key ]['url']
	);

	/** @var WP_MS_Themes_List_Table $wp_list_table */
	$wp_list_table = _get_list_table( 'WP_MS_Themes_List_Table' );

	$active = $theme->is_allowed( 'network' ) ? ' active' : '';

	$requires_wp  = isset( $response['requires'] ) ? $response['requires'] : null;
	$requires_php = isset( $response['requires_php'] ) ? $response['requires_php'] : null;

	$compatible_wp  = is_wp_version_compatible( $requires_wp );
	$compatible_php = is_php_version_compatible( $requires_php );

	printf(
		'<tr class="plugin-update-tr%s" id="%s" data-slug="%s">' .
		'<td colspan="%s" class="plugin-update colspanchange">' .
		'<div class="update-message notice inline notice-warning notice-alt"><p>',
		$active,
		esc_attr( $theme->get_stylesheet() . '-update' ),
		esc_attr( $theme->get_stylesheet() ),
		$wp_list_table->get_column_count()
	);

	if ( $compatible_wp && $compatible_php ) {
		if ( ! current_user_can( 'update_themes' ) ) {
			printf(
				/* translators: 1: Theme name, 2: Details URL, 3: Additional link attributes, 4: Version number. */
				__( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a>.' ),
				$theme['Name'],
				esc_url( $details_url ),
				sprintf(
					'class="thickbox open-plugin-details-modal" aria-label="%s"',
					/* translators: 1: Theme name, 2: Version number. */
					esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme['Name'], $response['new_version'] ) )
				),
				$response['new_version']
			);
		} elseif ( empty( $response['package'] ) ) {
			printf(
				/* translators: 1: Theme name, 2: Details URL, 3: Additional link attributes, 4: Version number. */
				__( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a>. <em>Automatic update is unavailable for this theme.</em>' ),
				$theme['Name'],
				esc_url( $details_url ),
				sprintf(
					'class="thickbox open-plugin-details-modal" aria-label="%s"',
					/* translators: 1: Theme name, 2: Version number. */
					esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme['Name'], $response['new_version'] ) )
				),
				$response['new_version']
			);
		} else {
			printf(
				/* translators: 1: Theme name, 2: Details URL, 3: Additional link attributes, 4: Version number, 5: Update URL, 6: Additional link attributes. */
				__( 'There is a new version of %1$s available. <a href="%2$s" %3$s>View version %4$s details</a> or <a href="%5$s" %6$s>update now</a>.' ),
				$theme['Name'],
				esc_url( $details_url ),
				sprintf(
					'class="thickbox open-plugin-details-modal" aria-label="%s"',
					/* translators: 1: Theme name, 2: Version number. */
					esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme['Name'], $response['new_version'] ) )
				),
				$response['new_version'],
				wp_nonce_url( self_admin_url( 'update.php?action=upgrade-theme&theme=' ) . $theme_key, 'upgrade-theme_' . $theme_key ),
				sprintf(
					'class="update-link" aria-label="%s"',
					/* translators: %s: Theme name. */
					esc_attr( sprintf( _x( 'Update %s now', 'theme' ), $theme['Name'] ) )
				)
			);
		}
	} else {
		if ( ! $compatible_wp && ! $compatible_php ) {
			printf(
				/* translators: %s: Theme name. */
				__( 'There is a new version of %s available, but it doesn&#8217;t work with your versions of WordPress and PHP.' ),
				$theme['Name']
			);
			if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
				printf(
					/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
					' ' . __( '<a href="%1$s">Please update WordPress</a>, and then <a href="%2$s">learn more about updating PHP</a>.' ),
					self_admin_url( 'update-core.php' ),
					esc_url( wp_get_update_php_url() )
				);
				wp_update_php_annotation( '</p><p><em>', '</em>' );
			} elseif ( current_user_can( 'update_core' ) ) {
				printf(
					/* translators: %s: URL to WordPress Updates screen. */
					' ' . __( '<a href="%s">Please update WordPress</a>.' ),
					self_admin_url( 'update-core.php' )
				);
			} elseif ( current_user_can( 'update_php' ) ) {
				printf(
					/* translators: %s: URL to Update PHP page. */
					' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
					esc_url( wp_get_update_php_url() )
				);
				wp_update_php_annotation( '</p><p><em>', '</em>' );
			}
		} elseif ( ! $compatible_wp ) {
			printf(
				/* translators: %s: Theme name. */
				__( 'There is a new version of %s available, but it doesn&#8217;t work with your version of WordPress.' ),
				$theme['Name']
			);
			if ( current_user_can( 'update_core' ) ) {
				printf(
					/* translators: %s: URL to WordPress Updates screen. */
					' ' . __( '<a href="%s">Please update WordPress</a>.' ),
					self_admin_url( 'update-core.php' )
				);
			}
		} elseif ( ! $compatible_php ) {
			printf(
				/* translators: %s: Theme name. */
				__( 'There is a new version of %s available, but it doesn&#8217;t work with your version of PHP.' ),
				$theme['Name']
			);
			if ( current_user_can( 'update_php' ) ) {
				printf(
					/* translators: %s: URL to Update PHP page. */
					' ' . __( '<a href="%s">Learn more about updating PHP</a>.' ),
					esc_url( wp_get_update_php_url() )
				);
				wp_update_php_annotation( '</p><p><em>', '</em>' );
			}
		}
	}

	/**
	 * Fires at the end of the update message container in each
	 * row of the themes list table.
	 *
	 * The dynamic portion of the hook name, `$theme_key`, refers to
	 * the theme slug as found in the WordPress.org themes repository.
	 *
	 * @since 3.1.0
	 *
	 * @param WP_Theme $theme    The WP_Theme object.
	 * @param array    $response {
	 *     An array of metadata about the available theme update.
	 *
	 *     @type string $new_version New theme version.
	 *     @type string $url         Theme URL.
	 *     @type string $package     Theme update package URL.
	 * }
	 */
	do_action( "in_theme_update_message-{$theme_key}", $theme, $response ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

	echo '</p></div></td></tr>';
}