February 11, 2011 
Definition:
function delete_site_transient( $transient ) {}
Delete a site transient.
Parameters
- string $transient: Transient name. Expected to not be SQL-escaped.
Return values
returns:True if successful, false otherwise
Defined actions
- delete_site_transient_’.$transient
do_action( 'delete_site_transient_' . $transient, $transient ); - deleted_site_transient
do_action( 'deleted_site_transient', $transient );
Source code
function delete_site_transient( $transient ) {
global $_wp_using_ext_object_cache;
do_action( 'delete_site_transient_' . $transient, $transient );
if ( $_wp_using_ext_object_cache ) {
$result = wp_cache_delete( $transient, 'site-transient' );
} else {
$option_timeout = '_site_transient_timeout_' . $transient;
$option = '_site_transient_' . $transient;
$result = delete_site_option( $option );
if ( $result )
delete_site_option( $option_timeout );
}
if ( $result )
do_action( 'deleted_site_transient', $transient );
return $result;
}
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A HitchHackers guide through WordPress 
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