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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 |
---|---|
820 | if ( $url ) { |
821 | /** |
822 | * Filters the URL returned by get_bloginfo(). |
823 | * |
824 | * @since 2.0.5 |
825 | * |
826 | * @param string $output The URL returned by bloginfo(). |
827 | * @param string $show Type of information requested. |
828 | */ |
829 | $output = apply_filters( 'bloginfo_url', $output, $show ); |
830 | } else { |
831 | /** |
832 | * Filters the site information returned by get_bloginfo(). |
833 | * |
834 | * @since 0.71 |
835 | * |
836 | * @param mixed $output The requested non-URL site information. |
837 | * @param string $show Type of information requested. |
838 | */ |