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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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188 |
|
189 | if ( !get_user_meta($user_id, 'primary_blog', true) ) { |
190 | update_user_meta($user_id, 'primary_blog', $blog_id); |
191 | $details = get_blog_details($blog_id); |
192 | update_user_meta($user_id, 'source_domain', $details->domain); |
193 | } |
194 |
|
195 | $user->set_role($role); |
196 |
|
197 | do_action('add_user_to_blog', $user_id, $role, $blog_id); |
198 | wp_cache_delete( $user_id, 'users' ); |
199 | restore_current_blog(); |
200 | return true; |
201 | } |
202 |
|
203 | /** |
204 | * Remove a user from a blog. |
205 | * |
206 | * Use the 'remove_user_from_blog' action to fire an event when |