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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 |
|---|---|
| 214 | |
| 215 | if ( !get_user_meta($user_id, 'primary_blog', true) ) { |
| 216 | update_user_meta($user_id, 'primary_blog', $blog_id); |
| 217 | $details = get_blog_details($blog_id); |
| 218 | update_user_meta($user_id, 'source_domain', $details->domain); |
| 219 | } |
| 220 | |
| 221 | $user->set_role($role); |
| 222 | |
| 223 | do_action('add_user_to_blog', $user_id, $role, $blog_id); |
| 224 | wp_cache_delete( $user_id, 'users' ); |
| 225 | restore_current_blog(); |
| 226 | return true; |
| 227 | } |
| 228 | |
| 229 | function remove_user_from_blog($user_id, $blog_id = '', $reassign = '') { |
| 230 | global $wpdb; |
| 231 | switch_to_blog($blog_id); |
| 232 | $user_id = (int) $user_id; |