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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 203 | $submenu_file = 'sites.php'; |
| 204 | |
| 205 | /** |
| 206 | * Filters whether to show the Add Existing User form on the Multisite Users screen. |
| 207 | * |
| 208 | * @since 3.1.0 |
| 209 | * |
| 210 | * @param bool $bool Whether to show the Add Existing User form. Default true. |
| 211 | */ |
| 212 | if ( ! wp_is_large_network( 'users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) |
| 213 | wp_enqueue_script( 'user-suggest' ); |
| 214 | |
| 215 | require( ABSPATH . 'wp-admin/admin-header.php' ); ?> |
| 216 | |
| 217 | <script type="text/javascript"> |
| 218 | var current_site_id = <?php echo $id; ?>; |
| 219 | </script> |
| 220 | |
| 221 | |
| Line | Code |
| 281 | <?php |
| 282 | /** |
| 283 | * Fires after the list table on the Users screen in the Multisite Network Admin. |
| 284 | * |
| 285 | * @since 3.1.0 |
| 286 | */ |
| 287 | do_action( 'network_site_users_after_list_table' ); |
| 288 | |
| 289 | /** This filter is documented in wp-admin/network/site-users.php */ |
| 290 | if ( current_user_can( 'promote_users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) : ?> |
| 291 | <h2 id="add-existing-user"><?php _e( 'Add Existing User' ); ?></h2> |
| 292 | <form action="site-users.php?action=adduser" id="adduser" method="post"> |
| 293 | <input type="hidden" name="id" value="<?php echo esc_attr( $id ) ?>" /> |
| 294 | <table class="form-table"> |
| 295 | <tr> |
| 296 | <th scope="row"><label for="newuser"><?php _e( 'Username' ); ?></label></th> |
| 297 | <td><input type="text" class="regular-text wp-suggest-user" name="newuser" id="newuser" /></td> |
| 298 | </tr> |
| 299 | <tr> |