- %1$s is private and should not be used in themes or plugins directly.
- preview_theme_ob_filter_callback is deprecated since version 4.3.0!
preview_theme_ob_filter_callback ( $matches )
- Introduced in WordPress: 2.6.0
- Deprecated in WordPress: 4.3.0
Manipulates preview theme links in order to control and maintain location.
Callback function for preg_replace_callback() to accept and filter matches.