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<?php /** * Robots template functions. * * @package WordPress * @subpackage Robots * @since 5.7.0 / /* * Displays the robots meta tag as necessary. * * Gathers robots directives to include for the current context, using the * {@see 'wp_robots'} filter. The directives are then sanitized, and the * robots meta tag is output if there is at least one relevant directive. * * @since 5.7.0 * @since 5.7.1 No longer prevents specific directives to occur together. / function wp_robots() { /* * Filters the directives to be included in the 'robots' meta tag. * * The meta tag will only be included as necessary. * * @since 5.7.0 * * @param array $robots Associative array of directives. Every key must be the name of the directive, and the * corresponding value must either be a string to provide as value for the directive or a * boolean `true` if it is a boolean directive, i.e. without a value. / $robots = apply_filters( 'wp_robots', array() ); $robots_strings = array(); foreach ( $robots as $directive => $value ) { if ( is_string( $value ) ) { // If a string value, include it as value for the directive. $robots_strings[] = "{$directive}:{$value}"; } elseif ( $value ) { // Otherwise, include the directive if it is truthy. $robots_strings[] = $directive; } } if ( empty( $robots_strings ) ) { return; } echo "<meta name='robots' content='" . esc_attr( implode( ', ', $robots_strings ) ) . "' />\n"; } /* * Adds `noindex` to the robots meta tag if required by the site configuration. * * If a blog is marked as not being public then noindex will be output to * tell web robots not to index the page content. Add this to the * {@see 'wp_robots'} filter. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_noindex' ); * * @since 5.7.0 * * @see wp_robots_no_robots() * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. / function wp_robots_noindex( array $robots ) { if ( ! get_option( 'blog_public' ) ) { return wp_robots_no_robots( $robots ); } return $robots; } /* * Adds `noindex` to the robots meta tag for embeds. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_noindex_embeds' ); * * @since 5.7.0 * * @see wp_robots_no_robots() * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. / function wp_robots_noindex_embeds( array $robots ) { if ( is_embed() ) { return wp_robots_no_robots( $robots ); } return $robots; } /* * Adds `noindex` to the robots meta tag if a search is being performed. * * If a search is being performed then noindex will be output to * tell web robots not to index the page content. Add this to the * {@see 'wp_robots'} filter. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_noindex_search' ); * * @since 5.7.0 * * @see wp_robots_no_robots() * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. / function wp_robots_noindex_search( array $robots ) { if ( is_search() ) { return wp_robots_no_robots( $robots ); } return $robots; } /* * Adds `noindex` to the robots meta tag. * * This directive tells web robots not to index the page content. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_no_robots' ); * * @since 5.7.0 * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. / function wp_robots_no_robots( array $robots ) { $robots['noindex'] = true; if ( get_option( 'blog_public' ) ) { $robots['follow'] = true; } else { $robots['nofollow'] = true; } return $robots; } /* * Adds `noindex` and `noarchive` to the robots meta tag. * * This directive tells web robots not to index or archive the page content and * is recommended to be used for sensitive pages. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_sensitive_page' ); * * @since 5.7.0 * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. / function wp_robots_sensitive_page( array $robots ) { $robots['noindex'] = true; $robots['noarchive'] = true; return $robots; } /* * Adds `max-image-preview:large` to the robots meta tag. * * This directive tells web robots that large image previews are allowed to be * displayed, e.g. in search engines, unless the blog is marked as not being public. * * Typical usage is as a {@see 'wp_robots'} callback: * * add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' ); * * @since 5.7.0 * * @param array $robots Associative array of robots directives. * @return array Filtered robots directives. */ function wp_robots_max_image_preview_large( array $robots ) { if ( get_option( 'blog_public' ) ) { $robots['max-image-preview'] = 'large'; } return $robots; }

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