WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 2504 | |
| 2505 | $sanitized_user_login = sanitize_user( $user_login ); |
| 2506 | /** |
| 2507 | * Filters the email address of a user being registered. |
| 2508 | * |
| 2509 | * @since 2.1.0 |
| 2510 | * |
| 2511 | * @param string $user_email The email address of the new user. |
| 2512 | */ |
| 2513 | $user_email = apply_filters( 'user_registration_email', $user_email ); |
| 2514 | |
| 2515 | // Check the username. |
| 2516 | if ( '' === $sanitized_user_login ) { |
| 2517 | $errors->add( 'empty_username', __( '<strong>Error</strong>: Please enter a username.' ) ); |
| 2518 | } elseif ( ! validate_username( $user_login ) ) { |
| 2519 | $errors->add( 'invalid_username', __( '<strong>Error</strong>: This username is invalid because it uses illegal characters. Please enter a valid username.' ) ); |
| 2520 | $sanitized_user_login = ''; |
| 2521 | } elseif ( username_exists( $sanitized_user_login ) ) { |
| 2522 | $errors->add( 'username_exists', __( '<strong>Error</strong>: This username is already registered. Please choose another one.' ) ); |