preview_theme_ob_filter() │ WP 2.6.0

Deprecated since 4.3.0. It is no longer supported and may 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.

Returns

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 6.8.3

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