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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 |
|---|---|
| 914 | ) { |
| 915 | /** |
| 916 | * Filters the URL returned by get_bloginfo(). |
| 917 | * |
| 918 | * @since 2.0.5 |
| 919 | * |
| 920 | * @param string $output The URL returned by bloginfo(). |
| 921 | * @param string $show Type of information requested. |
| 922 | */ |
| 923 | $output = apply_filters( 'bloginfo_url', $output, $show ); |
| 924 | } else { |
| 925 | /** |
| 926 | * Filters the site information returned by get_bloginfo(). |
| 927 | * |
| 928 | * @since 0.71 |
| 929 | * |
| 930 | * @param mixed $output The requested non-URL site information. |
| 931 | * @param string $show Type of information requested. |
| 932 | */ |