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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 |
---|---|
1312 | */ |
1313 | function do_robots() { |
1314 | header( 'Content-Type: text/plain; charset=utf-8' ); |
1315 |
|
1316 | /** |
1317 | * Fires when displaying the robots.txt file. |
1318 | * |
1319 | * @since 2.1.0 |
1320 | */ |
1321 | do_action( 'do_robotstxt' ); |
1322 |
|
1323 | $output = "User-agent: *\n"; |
1324 | $public = get_option( 'blog_public' ); |
1325 | if ( '0' == $public ) { |
1326 | $output .= "Disallow: /\n"; |
1327 | } else { |
1328 | $site_url = parse_url( site_url() ); |
1329 | $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; |
1330 | $output .= "Disallow: $path/wp-admin/\n"; |