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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 |
|---|---|
| 1057 | if ( '0' == $public ) { |
| 1058 | $output .= "Disallow: /\n"; |
| 1059 | } else { |
| 1060 | $site_url = parse_url( site_url() ); |
| 1061 | $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; |
| 1062 | $output .= "Disallow: $path/wp-admin/\n"; |
| 1063 | $output .= "Disallow: $path/wp-includes/\n"; |
| 1064 | } |
| 1065 | |
| 1066 | echo apply_filters('robots_txt', $output, $public); |
| 1067 | } |
| 1068 | |
| 1069 | /** |
| 1070 | * Test whether blog is already installed. |
| 1071 | * |
| 1072 | * The cache will be checked first. If you have a cache plugin, which saves the |
| 1073 | * cache values, then this will work. If you use the default WordPress cache, |
| 1074 | * and the database goes away, then you might have problems. |
| 1075 | * |