Change the currency symbol from '$' to 'USD' in Woocommerce

functions.php

add_filter( 'woocommerce_currency_symbol', 'change_currency_symbol', 10, 2 );

function change_currency_symbol( $symbols, $currency ) {
	if ( 'USD' === $currency ) {
		return 'USD';
	}

	if ( 'EUR' === $currency ) {
		return 'Euro';
	}

	if ( 'AED' === $currency ) {
		return 'AED';
	}

        return $symbols;
}

thanks for the code, but the code shown everywhere, I want to show it an only single product page

https://stackoverflow.com/questions/43734905/how-can-i-change-currency-symbol-in-woocommerce
https://wordpress.org/support/topic/how-to-change-woocommerce-currency-symbol/
https://docs.woocommerce.com/document/change-a-currency-symbol/