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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 |
|---|---|
| 884 | if ( $url ) { |
| 885 | /** |
| 886 | * Filters the URL returned by get_bloginfo(). |
| 887 | * |
| 888 | * @since 2.0.5 |
| 889 | * |
| 890 | * @param string $output The URL returned by bloginfo(). |
| 891 | * @param string $show Type of information requested. |
| 892 | */ |
| 893 | $output = apply_filters( 'bloginfo_url', $output, $show ); |
| 894 | } else { |
| 895 | /** |
| 896 | * Filters the site information returned by get_bloginfo(). |
| 897 | * |
| 898 | * @since 0.71 |
| 899 | * |
| 900 | * @param mixed $output The requested non-URL site information. |
| 901 | * @param string $show Type of information requested. |
| 902 | */ |