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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 |
|---|---|
| 721 | $activate_url = "http://{$domain}{$path}wp-activate.php?key=$key"; // @todo use *_url() API |
| 722 | |
| 723 | $activate_url = esc_url($activate_url); |
| 724 | $admin_email = get_site_option( 'admin_email' ); |
| 725 | if ( $admin_email == '' ) |
| 726 | $admin_email = 'support@' . $_SERVER['SERVER_NAME']; |
| 727 | $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) ); |
| 728 | $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n"; |
| 729 | $message = sprintf( |
| 730 | apply_filters( 'wpmu_signup_blog_notification_email', |
| 731 | __( "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" ), |
| 732 | $domain, $path, $title, $user, $user_email, $key, $meta |
| 733 | ), |
| 734 | $activate_url, |
| 735 | esc_url( "http://{$domain}{$path}" ), |
| 736 | $key |
| 737 | ); |
| 738 | // TODO: Don't hard code activation link. |
| 739 | $subject = sprintf( |