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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 |
---|---|
173 | } |
174 | break; |
175 | default: |
176 | if ( ! isset( $_REQUEST['users'] ) ) { |
177 | break; |
178 | } |
179 | check_admin_referer( 'bulk-users' ); |
180 | $userids = $_REQUEST['users']; |
181 | /** This action is documented in wp-admin/network/site-themes.php */ |
182 | $referer = apply_filters( 'handle_network_bulk_actions-' . get_current_screen()->id, $referer, $action, $userids, $id ); |
183 | $update = $action; |
184 | break; |
185 | } |
186 |
|
187 | wp_safe_redirect( add_query_arg( 'update', $update, $referer ) ); |
188 | exit(); |
189 | } |
190 |
|
191 | restore_current_blog(); |