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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 |
|---|---|
| 323 | |
| 324 | <?php |
| 325 | /** |
| 326 | * Filters whether to show the Add New User form on the Multisite Users screen. |
| 327 | * |
| 328 | * @since 3.1.0 |
| 329 | * |
| 330 | * @param bool $bool Whether to show the Add New User form. Default true. |
| 331 | */ |
| 332 | if ( current_user_can( 'create_users' ) && apply_filters( 'show_network_site_users_add_new_form', true ) ) : |
| 333 | ?> |
| 334 | <h2 id="add-new-user"><?php _e( 'Add New User' ); ?></h2> |
| 335 | <form action="<?php echo network_admin_url( 'site-users.php?action=newuser' ); ?>" id="newuser" method="post"> |
| 336 | <input type="hidden" name="id" value="<?php echo esc_attr( $id ); ?>" /> |
| 337 | <table class="form-table" role="presentation"> |
| 338 | <tr> |
| 339 | <th scope="row"><label for="user_username"><?php _e( 'Username' ); ?></label></th> |
| 340 | <td><input type="text" class="regular-text" name="user[username]" id="user_username" /></td> |
| 341 | </tr> |