preview_theme_ob_filter() │ WP 2.6.0

Deprecated from version 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.

Callback function for ob_start() to capture all links in the theme.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Return

String.

Usage

preview_theme_ob_filter( $content );
$content(string) (required)
-

Changelog

Since 2.6.0 Introduced.
Deprecated since 4.3.0

preview_theme_ob_filter() code WP 6.7.1

wp-includes/deprecated.php 
function preview_theme_ob_filter( $content ) {
	_deprecated_function( __FUNCTION__, '4.3.0' );
	return $content;
}