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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 |
---|---|
780 | $value = $row->meta_value; |
781 | $value = maybe_unserialize( $value ); |
782 | wp_cache_set( $cache_key, $value, 'site-options' ); |
783 | } else { |
784 | $value = apply_filters( 'default_site_option_' . $option, $default ); |
785 | } |
786 | } |
787 | } |
788 |
|
789 | return apply_filters( 'site_option_' . $option, $value ); |
790 | } |
791 |
|
792 | /** |
793 | * Add a new site option. |
794 | * |
795 | * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. |
796 | * |
797 | * @see add_option() |
798 | * @package WordPress |