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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 |
|---|---|
| 649 | $active_signup = get_site_option( 'registration', 'none' ); |
| 650 | /** |
| 651 | * Filter the type of site sign-up. |
| 652 | * |
| 653 | * @since 3.0.0 |
| 654 | * |
| 655 | * @param string $active_signup String that returns registration type. The value can be |
| 656 | * 'all', 'none', 'blog', or 'user'. |
| 657 | */ |
| 658 | $active_signup = apply_filters( 'wpmu_active_signup', $active_signup ); |
| 659 | |
| 660 | // Make the signup type translatable. |
| 661 | $i18n_signup['all'] = _x('all', 'Multisite active signup type'); |
| 662 | $i18n_signup['none'] = _x('none', 'Multisite active signup type'); |
| 663 | $i18n_signup['blog'] = _x('blog', 'Multisite active signup type'); |
| 664 | $i18n_signup['user'] = _x('user', 'Multisite active signup type'); |
| 665 | |
| 666 | if ( is_super_admin() ) |
| 667 | echo '<div class="mu_alert">' . sprintf( __( 'Greetings Site Administrator! You are currently allowing “%s” registrations. To change or disable registration go to your <a href="%s">Options page</a>.' ), $i18n_signup[$active_signup], esc_url( network_admin_url( 'settings.php' ) ) ) . '</div>'; |