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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 |
---|---|
1151 | */ |
1152 | function do_robots() { |
1153 | header( 'Content-Type: text/plain; charset=utf-8' ); |
1154 |
|
1155 | /** |
1156 | * Fires when displaying the robots.txt file. |
1157 | * |
1158 | * @since 2.1.0 |
1159 | */ |
1160 | do_action( 'do_robotstxt' ); |
1161 |
|
1162 | $output = "User-agent: *\n"; |
1163 | $public = get_option( 'blog_public' ); |
1164 | if ( '0' == $public ) { |
1165 | $output .= "Disallow: /\n"; |
1166 | } else { |
1167 | $site_url = parse_url( site_url() ); |
1168 | $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; |
1169 | $output .= "Disallow: $path/wp-admin/\n"; |