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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 |
|---|---|
| 808 | * @param string $content Content of the notification email. |
| 809 | * @param string $domain Site domain. |
| 810 | * @param string $path Site path. |
| 811 | * @param string $title Site title. |
| 812 | * @param string $user User login name. |
| 813 | * @param string $user_email User email address. |
| 814 | * @param string $key Activation key created in wpmu_signup_blog(). |
| 815 | * @param array $meta By default, contains the requested privacy setting and lang_id. |
| 816 | */ |
| 817 | apply_filters( 'wpmu_signup_blog_notification_email', |
| 818 | __( "To activate your blog, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login.\n\nAfter you activate, you can visit your site here:\n\n%s" ), |
| 819 | $domain, $path, $title, $user, $user_email, $key, $meta |
| 820 | ), |
| 821 | $activate_url, |
| 822 | esc_url( "http://{$domain}{$path}" ), |
| 823 | $key |
| 824 | ); |
| 825 | // TODO: Don't hard code activation link. |
| 826 | $subject = sprintf( |