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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 |
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811 |
|
812 | /** |
813 | * Filters the type of site sign-up. |
814 | * |
815 | * @since 3.0.0 |
816 | * |
817 | * @param string $active_signup String that returns registration type. The value can be |
818 | * 'all', 'none', 'blog', or 'user'. |
819 | */ |
820 | $active_signup = apply_filters( 'wpmu_active_signup', $active_signup ); |
821 |
|
822 | if ( current_user_can( 'manage_network' ) ) { |
823 | echo '<div class="mu_alert">'; |
824 | _e( 'Greetings Network Administrator!' ); |
825 | echo ' '; |
826 |
|
827 | switch ( $active_signup ) { |
828 | case 'none': |
829 | _e( 'The network currently disallows registrations.' ); |