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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 |
|---|---|
| 20 | |
| 21 | if ( ! current_user_can('create_users') ) |
| 22 | wp_die(__('You can’t create users.')); |
| 23 | |
| 24 | $user_id = add_user(); |
| 25 | |
| 26 | if ( is_wp_error( $user_id ) ) { |
| 27 | $add_user_errors = $user_id; |
| 28 | } else { |
| 29 | $new_user_login = apply_filters('pre_user_login', sanitize_user(stripslashes($_REQUEST['user_login']), true)); |
| 30 | $redirect = 'users.php?usersearch='. urlencode($new_user_login) . '&update=add'; |
| 31 | wp_redirect( $redirect . '#user-' . $user_id ); |
| 32 | die(); |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | $title = __('Add New User'); |
| 37 | $parent_file = 'users.php'; |
| 38 | |