Detecting currency with PHP

Hey, I need to detect the active currency with PHP so I can hide or show something on the site. Here′s the code I tried with no success:

add_action( 'ocultar_preciobbva', 'bbva_ocultar' );

function bbva_ocultar() {
	
	if ( class_exists( 'WOOMULTI_CURRENCY_F_Data' ) )
	{
		$currency_data_obj = new WOOMULTI_CURRENCY_Data();
		$current_currency = $currency_data_obj->get_current_currency();
		
		if ( $current_currency == 'USD' ){
			
			?><script type="text/javascript">

			var bbvatext = document.getElementById("preciobbva");
			bbvatext.style.display = "none";
			console.log("NO MAS BBVA");

			
			</script><?php
		}
	}
	else
	{
		
	}
}