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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 |
|---|---|
| 2108 | |
| 2109 | /** |
| 2110 | * Filters whether the admin is notified of a new user registration. |
| 2111 | * |
| 2112 | * @since 6.1.0 |
| 2113 | * |
| 2114 | * @param bool $send Whether to send the email. Default true. |
| 2115 | * @param WP_User $user User object for new user. |
| 2116 | */ |
| 2117 | $send_notification_to_admin = apply_filters( 'wp_send_new_user_notification_to_admin', true, $user ); |
| 2118 | |
| 2119 | if ( 'user' !== $notify && true === $send_notification_to_admin ) { |
| 2120 | $switched_locale = switch_to_locale( get_locale() ); |
| 2121 | |
| 2122 | /* translators: %s: Site title. */ |
| 2123 | $message = sprintf( __( 'New user registration on your site %s:' ), $blogname ) . "\r\n\r\n"; |
| 2124 | /* translators: %s: User login. */ |
| 2125 | $message .= sprintf( __( 'Username: %s' ), $user->user_login ) . "\r\n\r\n"; |
| 2126 | /* translators: %s: User email address. */ |