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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 |
|---|---|
| 240 | * Ajax handler for user autocomplete. |
| 241 | * |
| 242 | * @since 3.4.0 |
| 243 | */ |
| 244 | function wp_ajax_autocomplete_user() { |
| 245 | if ( ! is_multisite() || ! current_user_can( 'promote_users' ) || wp_is_large_network( 'users' ) ) |
| 246 | wp_die( -1 ); |
| 247 | |
| 248 | /** This filter is documented in wp-admin/user-new.php */ |
| 249 | if ( ! current_user_can( 'manage_network_users' ) && ! apply_filters( 'autocomplete_users_for_site_admins', false ) ) |
| 250 | wp_die( -1 ); |
| 251 | |
| 252 | $return = array(); |
| 253 | |
| 254 | // Check the type of request |
| 255 | // Current allowed values are `add` and `search` |
| 256 | if ( isset( $_REQUEST['autocomplete_type'] ) && 'search' === $_REQUEST['autocomplete_type'] ) { |
| 257 | $type = $_REQUEST['autocomplete_type']; |
| 258 | } else { |