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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 |
---|---|
877 | if ( $url ) { |
878 | /** |
879 | * Filters the URL returned by get_bloginfo(). |
880 | * |
881 | * @since 2.0.5 |
882 | * |
883 | * @param string $output The URL returned by bloginfo(). |
884 | * @param string $show Type of information requested. |
885 | */ |
886 | $output = apply_filters( 'bloginfo_url', $output, $show ); |
887 | } else { |
888 | /** |
889 | * Filters the site information returned by get_bloginfo(). |
890 | * |
891 | * @since 0.71 |
892 | * |
893 | * @param mixed $output The requested non-URL site information. |
894 | * @param string $show Type of information requested. |
895 | */ |