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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 |
|---|---|
| 165 | $submenu_file = 'sites.php'; |
| 166 | |
| 167 | /** |
| 168 | * Filter whether to show the Add Existing User form on the Multisite Users screen. |
| 169 | * |
| 170 | * @since 3.1.0 |
| 171 | * |
| 172 | * @param bool $bool Whether to show the Add Existing User form. Default true. |
| 173 | */ |
| 174 | if ( ! wp_is_large_network( 'users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) |
| 175 | wp_enqueue_script( 'user-suggest' ); |
| 176 | |
| 177 | require( ABSPATH . 'wp-admin/admin-header.php' ); ?> |
| 178 | |
| 179 | <script type="text/javascript"> |
| 180 | /* <![CDATA[ */ |
| 181 | var current_site_id = <?php echo $id; ?>; |
| 182 | /* ]]> */ |
| 183 | </script> |
| Line | Code |
| 252 | <?php |
| 253 | /** |
| 254 | * Fires after the list table on the Users screen in the Multisite Network Admin. |
| 255 | * |
| 256 | * @since 3.1.0 |
| 257 | */ |
| 258 | do_action( 'network_site_users_after_list_table' ); |
| 259 | |
| 260 | /** This filter is documented in wp-admin/network/site-users.php */ |
| 261 | if ( current_user_can( 'promote_users' ) && apply_filters( 'show_network_site_users_add_existing_form', true ) ) : ?> |
| 262 | <h3 id="add-existing-user"><?php _e( 'Add Existing User' ); ?></h3> |
| 263 | <form action="site-users.php?action=adduser" id="adduser" method="post"> |
| 264 | <input type="hidden" name="id" value="<?php echo esc_attr( $id ) ?>" /> |
| 265 | <table class="form-table"> |
| 266 | <tr> |
| 267 | <th scope="row"><?php _e( 'Username' ); ?></th> |
| 268 | <td><input type="text" class="regular-text wp-suggest-user" name="newuser" id="newuser" /></td> |
| 269 | </tr> |
| 270 | <tr> |