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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 |
|---|---|
| 207 | $submenu_file = 'sites.php'; |
| 208 | |
| 209 | /** |
| 210 | * Filters whether to show the Add Existing User form on the Multisite Users screen. |
| 211 | * |
| 212 | * @since 3.1.0 |
| 213 | * |
| 214 | * @param bool $bool Whether to show the Add Existing User form. Default true. |
| 215 | */ |
| 216 | if ( ! wp_is_large_network( 'users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) { |
| 217 | wp_enqueue_script( 'user-suggest' ); |
| 218 | } |
| 219 | |
| 220 | require_once ABSPATH . 'wp-admin/admin-header.php'; ?> |
| 221 | |
| 222 | <script type="text/javascript"> |
| 223 | var current_site_id = <?php echo $id; ?>; |
| 224 | </script> |
| 225 | |
| Line | Code |
| 292 | <?php |
| 293 | /** |
| 294 | * Fires after the list table on the Users screen in the Multisite Network Admin. |
| 295 | * |
| 296 | * @since 3.1.0 |
| 297 | */ |
| 298 | do_action( 'network_site_users_after_list_table' ); |
| 299 | |
| 300 | /** This filter is documented in wp-admin/network/site-users.php */ |
| 301 | if ( current_user_can( 'promote_users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) : |
| 302 | ?> |
| 303 | <h2 id="add-existing-user"><?php _e( 'Add Existing User' ); ?></h2> |
| 304 | <form action="site-users.php?action=adduser" id="adduser" method="post"> |
| 305 | <input type="hidden" name="id" value="<?php echo esc_attr( $id ); ?>" /> |
| 306 | <table class="form-table" role="presentation"> |
| 307 | <tr> |
| 308 | <th scope="row"><label for="newuser"><?php _e( 'Username' ); ?></label></th> |
| 309 | <td><input type="text" class="regular-text wp-suggest-user" name="newuser" id="newuser" /></td> |
| 310 | </tr> |