(a11y) we'll also display that information to screen readers.
	$price .= '<span class="screen-reader-text">';
	// translators: %s is a product's regular price.
	$price .= esc_html( sprintf( __( 'Original price was: %s.', 'woocommerce' ), wp_strip_all_tags( $formatted_regular_price ) ) );
	$price .= '</span>';

	// Add the sale price.
	$price .= '<ins aria-hidden="true">' . $formatted_sale_price . '</ins>';

	// For accessibility (a11y) we'll also display that information to screen readers.
	$price .= '<span class="screen-reader-text">';
	// translators: %s is a product's current (sale) price.
	$price .= esc_html( sprintf( __( 'Current price is: %s.', 'woocommerce' ), wp_strip_all_tags( $formatted_sale_price ) ) );
	$price .= '</span>';

	return apply_filters( 'woocommerce_format_sale_price', $price, $regular_price, $sale_price );
}

/**
 * Format a price range for display.
 *
 * @param  string $from Price from.
 * @param  string $to   Price to.
 * @return string
 */
function wc_format_price_range( $from, $to ) {
	/* translators: 1: price from 2: price to */
	$price = sprintf( _x( '%1$s &ndash; %2$s', 'Price range: from-to', 'woocommerce' ), is_numeric( $from ) ? wc_price( $from ) : $from, is_numeric( $to ) ? wc_price( $to ) : $to );
	return apply_filters( 'woocommerce_format_price_range', $price, $from, $to );
}

/**
 * Format a weight for display.
 *
 * @since  3.0.0
 * @param  float $weight Weight.
 * @return string
 */
function wc_format_weight( $weight ) {
	$weight_string = wc_format_localized_decimal( $weight );

	if ( ! empty( $weight_string ) ) {
		$weight_label = I18nUtil::get_weight_unit_label( get_option( 'woocommerce_weight_unit' ) );

		$weight_string = sprintf(
			// translators: 1. A formatted number; 2. A label for a weight unit of measure. E.g. 2.72 kg.
			_x( '%1$s %2$s', 'formatted weight', 'woocommerce' ),
			$weight_string,
			$weight_label
		);
	} else {
		$weight_string = __( 'N/A', 'woocommerce' );
	}

	return apply_filters( 'woocommerce_format_weight', $weight_string, $weight );
}

/**
 * Format dimensions for display.
 *
 * @since  3.0.0
 * @param  array $dimensions Array of dimensions.
 * @return string
 */
function wc_format_dimensions( $dimensions ) {
	$dimension_string = implode( ' &times; ', array_filter( array_map( 'wc_format_localized_decimal', $dimensions ) ) );

	if ( ! empty( $dimension_string ) ) {
		$dimension_label = I18nUtil::get_dimensions_unit_label( get_option( 'woocommerce_dimension_unit' ) );

		$dimension_string = sprintf(
			// translators: 1. A formatted number; 2. A label for a dimensions unit of measure. E.g. 3.14 cm.
			_x( '%1$s %2$s', 'formatted dimensions', 'woocommerce' ),
			$dimension_string,
			$dimension_label
		);
	} else {
		$dimension_string = __( 'N/A', 'woocommerce' );
	}

	return apply_filters( 'woocommerce_format_dimensions', $dimension_string, $dimensions );
}

/**
 * Format a date for output.
 *
 * @since  3.0.0
 * @param  WC_DateTime $date   Instance of WC_DateTime.
 * @param  string      $format Data format.
 *                             Defaults to the wc_date_format function if not set.
 * @return string
 */
function wc_format_datetime( $date, $format = '' ) {
	if ( ! $format ) {
		$format = wc_date_format();
	}
	if ( ! is_a( $date, 'WC_DateTime' ) ) {
		return '';
	}
	return $date->date_i18n( $format );
}

/**
 * Process oEmbeds.
 *
 * @since  3.1.0
 * @param  string $content Content.
 * @return string
 */
function wc_do_oembeds( $content ) {
	global $wp_embed;

	$content = $wp_embed->autoembed( $content ?? '' );

	return $content;
}

/**
 * Get part of a string before :.
 *
 * Used for example in shipping methods ids where they take the format
 * method_id:instance_id
 *
 * @since  3.2.0
 * @param  string $string String to extract.
 * @return string
 */
function wc_get_string_before_colon( $string ) {
	return trim( current( explode( ':', (string) $string ) ) );
}

/**
 * Array merge and sum function.
 *
 * Source:  https://gist.github.com/Nickology/f700e319cbafab5eaedc
 *
 * @since 3.2.0
 * @return array
 */
function wc_array_merge_recursive_numeric() {
	$arrays = func_get_args();

	// If there's only one array, it's already merged.
	if ( 1 === count( $arrays ) ) {
		return $arrays[0];
	}

	// Remove any items in $arrays that are NOT arrays.
	foreach ( $arrays as $key => $array ) {
		if ( ! is_array( $array ) ) {
			unset( $arrays[ $key ] );
		}
	}

	// We start by setting the first array as our final array.
	// We will merge all other arrays with this one.
	$final = array_shift( $arrays );

	foreach ( $arrays as $b ) {
		foreach ( $final as $key => $value ) {
			// If $key does not exist in $b, then it is unique and can be safely merged.
			if ( ! isset( $b[ $key ] ) ) {
				$final[ $key ] = $value;
			} else {
				// If $key is present in $b, then we need to merge and sum numeric values in both.
				if ( is_numeric( $value ) && is_numeric( $b[ $key ] ) ) {
					// If both values for these keys are numeric, we sum them.
					$final[ $key ] = $value + $b[ $key ];
				} elseif ( is_array( $value ) && is_array( $b[ $key ] ) ) {
					// If both values are arrays, we recursively call ourself.
					$final[ $key ] = wc_array_merge_recursive_numeric( $value, $b[ $key ] );
				} else {
					// If both keys exist but differ in type, then we cannot merge them.
					// In this scenario, we will $b's value for $key is used.
					$final[ $key ] = $b[ $key ];
				}
			}
		}

		// Finally, we need to merge any keys that exist only in $b.
		foreach ( $b as $key => $value ) {
			if ( ! isset( $final[ $key ] ) ) {
				$final[ $key ] = $value;
			}
		}
	}

	return $final;
}

/**
 * Implode and escape HTML attributes for output.
 *
 * @since 3.3.0
 * @param array $raw_attributes Attribute name value pairs.
 * @return string
 */
function wc_implode_html_attributes( $raw_attributes ) {
	$attributes = array();
	foreach ( $raw_attributes as $name => $value ) {
		$attributes[] = esc_attr( $name ) . '="' . esc_attr( $value ) . '"';
	}
	return implode( ' ', $attributes );
}

/**
 * Escape JSON for use on HTML or attribute text nodes.
 *
 * @since 3.5.5
 * @param string $json JSON to escape.
 * @param bool   $html True if escaping for HTML text node, false for attributes. Determines how quotes are handled.
 * @return string Escaped JSON.
 */
function wc_esc_json( $json, $html = false ) {
	return _wp_specialchars(
		$json,
		$html ? ENT_NOQUOTES : ENT_QUOTES, // Escape quotes in attribute nodes only.
		'UTF-8',                           // json_encode() outputs UTF-8 (really just ASCII), not the blog's charset.
		true                               // Double escape entities: `&amp;` -> `&amp;amp;`.
	);
}

/**
 * Parse a relative date option from the settings API into a standard format.
 *
 * @since 3.4.0
 * @param mixed $raw_value Value stored in DB.
 * @return array Nicely formatted array with number and unit values.
 */
function wc_parse_relative_date_option( $raw_value ) {
	$periods = array(
		'days'   => __( 'Day(s)', 'woocommerce' ),
		'weeks'  => __( 'Week(s)', 'woocommerce' ),
		'months' => __( 'Month(s)', 'woocommerce' ),
		'years'  => __( 'Year(s)', 'woocommerce' ),
	);

	$value = wp_parse_args(
		(array) $raw_value,
		array(
			'number' => '',
			'unit'   => 'days',
		)
	);

	$value['number'] = ! empty( $value['number'] ) ? absint( $value['number'] ) : '';

	if ( ! in_array( $value['unit'], array_keys( $periods ), true ) ) {
		$value['unit'] = 'days';
	}

	return $value;
}

/**
 * Format the endpoint slug, strip out anything not allowed in a url.
 *
 * @since 3.5.0
 * @param string $raw_value The raw value.
 * @return string
 */
function wc_sanitize_endpoint_slug( $raw_value ) {
	return sanitize_title( $raw_value ?? '' );
}
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_checkout_pay_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_checkout_order_received_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_add_payment_method_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_delete_payment_method_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_set_default_payment_method_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_orders_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_view_order_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_downloads_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_edit_account_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_edit_address_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_payment_methods_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_myaccount_lost_password_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );
add_filter( 'woocommerce_admin_settings_sanitize_option_woocommerce_logout_endpoint', 'wc_sanitize_endpoint_slug', 10, 1 );