WordPress at a glance
filter is not described

transient_(transient) filter-hook . WP 2.8.0

Filters an existing transient's value.

The dynamic portion of the hook name, $transient, refers to the transient name.


add_filter( 'transient_(transient)', 'filter_function_name_3958', 10, 2 );
function filter_function_name_3958( $value, $transient ){
	// filter...

	return $value;
Value of transient.
Transient name.


  • Since 4.4.0 The $transient parameter was added

Where the hook is called

wp-includes/option.php 705
return apply_filters( "transient_{$transient}", $value, $transient );

Where the hook is used (in WP core)

Does not used.