Support PayPal GateWay in woocommerce.php

<?php
//woocommerce中文网关支持paypal
// details at http://devework.com/support-paypal-gateway-in-woocommerce.html

//本函数解决的问题：贝宝不支持你的商铺货币。Gateway Disabled: PayPal does not support your store's currency. 
add_filter( 'woocommerce_paypal_supported_currencies', 'enable_custom_currency' );
function enable_custom_currency($currency_array) {
  $currency_array[] = 'CNY';
  return $currency_array;
}
//美元人民币转，汇率自己定义
//thanks http://www.solagirl.net/woocommerce-paypal-rmb.html
add_filter('woocommerce_paypal_args', 'convert_rmb_to_usd');
function convert_rmb_to_usd($paypal_args){
    if ( $paypal_args['currency_code'] == 'CNY'){
        $convert_rate = 6.2; //Set converting rate
        $count = 1;
        while( isset($paypal_args['amount_' . $count]) ){
            $paypal_args['amount_' . $count] = round( $paypal_args['amount_' . $count] / $convert_rate, 2);
            $count++;
        }       
    }
    return $paypal_args;
}


?>

Hi, just a contribution to your code: You might consider adding this $paypal_args['currency_code'] = 'USD'; // change to USD

Full code below.

`add_filter('woocommerce_paypal_args', 'convert_to_usd');

function convert_to_usd($paypal_args){  
  if ( $paypal_args['currency_code'] == 'AED'){  
      $convert_rate = 3.67; // set the converting rate here
      $paypal_args['currency_code'] = 'USD'; // change to USD  
      $i = 1;

      while (isset($paypal_args['amount_' . $i])) {  
          $paypal_args['amount_' . $i] = round( $paypal_args['amount_' . $i] / $convert_rate, 2);  
          ++$i;  
      }  

  }  
  return $paypal_args;  
}`