WP_Site_Health::get_test_utf8mb4_support

					$this->health_check_mysql_rec_version
				)
			);
		}

		if ( ! $this->mysql_min_version_check ) {
			$result['status'] = 'critical';

			$result['label']          = __( 'Severely outdated SQL server' );
			$result['badge']['label'] = __( 'Security' );

			$result['description'] .= sprintf(
				'<p>%s</p>',
				sprintf(
					/* translators: 1: The database engine in use (MySQL or MariaDB). 2: Database server minimum version number. */
					__( 'WordPress requires %1$s version %2$s or higher. Contact your web hosting company to correct this.' ),
					( $this->is_mariadb ? 'MariaDB' : 'MySQL' ),
					$this->health_check_mysql_required_version
				)
			);
		}

		if ( $db_dropin ) {
			$result['description'] .= sprintf(
				'<p>%s</p>',
				wp_kses(
					sprintf(
						/* translators: 1: The name of the drop-in. 2: The name of the database engine. */
						__( 'You are using a %1$s drop-in which might mean that a %2$s database is not being used.' ),
						'<code>wp-content/db.php</code>',
						( $this->is_mariadb ? 'MariaDB' : 'MySQL' )
					),
					array(
						'code' => true,
					)
				)
			);
		}

		return $result;
	}

	/**
	 * Test if the database server is capable of using utf8mb4.
	 *
	 * @since 5.2.0
	 *
	 * @return array The test results.
	 */
	public function get_test_utf8mb4_support() {
		global $wpdb;

		if ( ! $this->mysql_server_version ) {
			$this->prepare_sql_data();
		}

		$result = array(
			'label'       => __( 'UTF8MB4 is supported' ),
			'status'      => 'good',
			'badge'       => array(
				'label' => __( 'Performance' ),
				'color' => 'blue',
			),
			'description' => sprintf(
				'<p>%s</p>',
				__( 'UTF8MB4 is the character set WordPress prefers for database storage because it safely supports the widest set of characters and encodings, including Emoji, enabling better support for non-English languages.' )
			),
			'actions'     => '',
			'test'        => 'utf8mb4_support',
		);

		if ( ! $this->is_mariadb ) {
			if ( version_compare( $this->mysql_server_version, '5.5.3', '<' ) ) {
				$result['status'] = 'recommended';

				$result['label'] = __( 'utf8mb4 requires a MySQL update' );

				$result['description'] .= sprintf(
					'<p>%s</p>',
					sprintf(
						/* translators: %s: Version number. */
						__( 'WordPress&#8217; utf8mb4 support requires MySQL version %s or greater. Please contact your server administrator.' ),
						'5.5.3'
					)
				);
			} else {
				$result['description'] .= sprintf(
					'<p>%s</p>',
					__( 'Your MySQL version supports utf8mb4.' )
				);
			}
		} else { // MariaDB introduced utf8mb4 support in 5.5.0.
			if ( version_compare( $this->mysql_server_version, '5.5.0', '<' ) ) {
				$result['status'] = 'recommended';

				$result['label'] = __( 'utf8mb4 requires a MariaDB update' );

				$result['description'] .= sprintf(
					'<p>%s</p>',
					sprintf(
						/* translators: %s: Version number. */
						__( 'WordPress&#8217; utf8mb4 support requires MariaDB version %s or greater. Please contact your server administrator.' ),
						'5.5.0'
					)
				);
			} else {
				$result['description'] .= sprintf(
					'<p>%s</p>',
					__( 'Your MariaDB version supports utf8mb4.' )
				);
			}
		}