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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 |
---|---|
1295 | */ |
1296 | function do_robots() { |
1297 | header( 'Content-Type: text/plain; charset=utf-8' ); |
1298 |
|
1299 | /** |
1300 | * Fires when displaying the robots.txt file. |
1301 | * |
1302 | * @since 2.1.0 |
1303 | */ |
1304 | do_action( 'do_robotstxt' ); |
1305 |
|
1306 | $output = "User-agent: *\n"; |
1307 | $public = get_option( 'blog_public' ); |
1308 | if ( '0' == $public ) { |
1309 | $output .= "Disallow: /\n"; |
1310 | } else { |
1311 | $site_url = parse_url( site_url() ); |
1312 | $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; |
1313 | $output .= "Disallow: $path/wp-admin/\n"; |