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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 |
---|---|
1525 | * |
1526 | * @since MU (3.0.0) |
1527 | * |
1528 | * @param int|bool $blog_id Blog ID. |
1529 | * @param int $user_id User ID. |
1530 | * @param string $password User password. |
1531 | * @param string $title Site title. |
1532 | * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. |
1533 | */ |
1534 | if ( ! apply_filters( 'wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta ) ) { |
1535 | return false; |
1536 | } |
1537 |
|
1538 | $user = get_userdata( $user_id ); |
1539 |
|
1540 | $switched_locale = switch_to_locale( get_user_locale( $user ) ); |
1541 |
|
1542 | $welcome_email = get_site_option( 'welcome_email' ); |
1543 | if ( $welcome_email == false ) { |