WordPress at a glance
function is not described

preview_theme_ob_filter_callback() WP 2.6.0

Deprecated in 4.3.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Manipulates preview theme links in order to control and maintain location.

Callback function for preg_replace_callback() to accept and filter matches.

No Hooks.

Return

String.

Usage

preview_theme_ob_filter_callback( $matches );
$matches(array) (required)

Code of preview theme ob filter callback: wp-includes/deprecated.php VER 5.0.3

<?php
function preview_theme_ob_filter_callback( $matches ) {
	_deprecated_function( __FUNCTION__, '4.3.0' );
	return '';
}