Woocommerce贝宝

Question

我需要一些帮助来完成此操作，我的woocommerce使用的是AED，并且我想使用Paypal，我已经成功添加了以下代码，但是当我测试购买时出现“内部错误”，这是我所需要的代码已经在结帐页面上使用了内部服务器错误。

我添加了步骤1和步骤2的代码

    *Step 1 Code to add AED currency symbol in WooCommerce:*/
    
add_filter( 'woocommerce_paypal_supported_currencies', 'add_aed_paypal_valid_currency' );       
   function add_aed_paypal_valid_currency( $currencies ) {    
   array_push ( $currencies , 'AED' );  
   return $currencies;    
}

    /*Step 2 – Code to change 'AED' currency to ‘USD’ before checking out with Paypal through WooCommerce:*/
 
add_filter('woocommerce_paypal_args', 'convert_aed_to_usd', 11 );  
function get_currency($from, $to){
  $from = "USD";
  $to = "AED"; 
		
  // create curl resource 
  $ch = curl_init(); 
 
  // set url 
  curl_setopt($ch, CURLOPT_URL, "https://free.currencyconverterapi.com/api/v5/convert?q={$from}_{$to}&compact=ultra"); 
 
  //return the transfer as a string 
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
 
  // $output contains the output string 
  $output = curl_exec($ch);
  // close curl resource to free up system resources 
  curl_close($ch); 
  $data = explode(':', $output);
  $data = explode(" ", $data[1]);
  $amnt = round($data[0], 2);
  return $amnt;
}
function convert_aed_to_usd($paypal_args){
    if ( $paypal_args['currency_code'] == 'AED'){  
	$convert_rate = get_currency(); //Set converting rate
	$paypal_args['currency_code'] = 'USD'; //change AED to USD  
    $i = 1;  
        while (isset($paypal_args['amount_' . $i])) {  
            $paypal_args['amount_' . $i] = round( $paypal_args['amount_' . $i] / $convert_rate, 2);
            ++$i;  
        }  
		if ( $paypal_args['shipping_1'] > 0 ) {
			$paypal_args['shipping_1'] = round( $paypal_args['shipping_1'] / $convert_rate, 2);
		}
		if ( $paypal_args['discount_amount_cart'] > 0 ) {
			$paypal_args['discount_amount_cart'] = round( $paypal_args['discount_amount_cart'] / $convert_rate, 2);
		}
		if ( $paypal_args['tax_cart'] > 0 ) {
  			$paypal_args['tax_cart'] = round( $paypal_args['tax_cart'] / $convert_rate, 2);
		}
			
	}
return $paypal_args;  
}

点击结帐完成付款时出现的错误是“内部错误”，有人可以帮助您成功完成此操作吗？

https://imgur.com/MqW6Gzf