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 |
|---|---|
| 3374 | |
| 3375 | $sanitized_user_login = sanitize_user( $user_login ); |
| 3376 | /** |
| 3377 | * Filters the email address of a user being registered. |
| 3378 | * |
| 3379 | * @since 2.1.0 |
| 3380 | * |
| 3381 | * @param string $user_email The email address of the new user. |
| 3382 | */ |
| 3383 | $user_email = apply_filters( 'user_registration_email', $user_email ); |
| 3384 | |
| 3385 | // Check the username. |
| 3386 | if ( '' === $sanitized_user_login ) { |
| 3387 | $errors->add( 'empty_username', __( '<strong>Error:</strong> Please enter a username.' ) ); |
| 3388 | } elseif ( ! validate_username( $user_login ) ) { |
| 3389 | $errors->add( 'invalid_username', __( '<strong>Error:</strong> This username is invalid because it uses illegal characters. Please enter a valid username.' ) ); |
| 3390 | $sanitized_user_login = ''; |
| 3391 | } elseif ( username_exists( $sanitized_user_login ) ) { |
| 3392 | $errors->add( 'username_exists', __( '<strong>Error:</strong> This username is already registered. Please choose another one.' ) ); |