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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 |
|---|---|
| 748 | if ( $url ) { |
| 749 | /** |
| 750 | * Filter the URL returned by get_bloginfo(). |
| 751 | * |
| 752 | * @since 2.0.5 |
| 753 | * |
| 754 | * @param mixed $output The URL returned by bloginfo(). |
| 755 | * @param mixed $show Type of information requested. |
| 756 | */ |
| 757 | $output = apply_filters( 'bloginfo_url', $output, $show ); |
| 758 | } else { |
| 759 | /** |
| 760 | * Filter the site information returned by get_bloginfo(). |
| 761 | * |
| 762 | * @since 0.71 |
| 763 | * |
| 764 | * @param mixed $output The requested non-URL site information. |
| 765 | * @param mixed $show Type of information requested. |
| 766 | */ |