February 12, 2011 
Definition:
function update_blog_option( $id, $key, $value, $deprecated = null ) {}
Update an option for a particular blog.
Parameters
- int $id: The blog id
- string $key: The option key
- mixed $value: The option value
- $deprecated
Return values
returns:True on success, false on failrue.
Source code
function update_blog_option( $id, $key, $value, $deprecated = null ) {
$id = (int) $id;
if ( null !== $deprecated )
_deprecated_argument( __FUNCTION__, '3.1' );
switch_to_blog($id);
$return = update_option( $key, $value );
restore_current_blog();
refresh_blog_details( $id );
if ( $return )
wp_cache_set( $id . '-' . $key . '-blog_option', $value, 'site-options');
return $return;
}
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