PhpPayPalConvertCurrency.php

<?php
var_dump(convertCurrency("100000",'USD','GBP'));

function convertCurrency($currencyAmount, $currencyFrom, $currencyTo) {
    // https://developer.paypal.com/docs/classic/api/adaptive-payments/ConvertCurrency_API_Operation/

    $bigO = array();
    $bigO['userName'] = 'jb-us-seller_api1.paypal.com'; //this is a official paypal test account..
    $bigO['password'] = 'WX4WTU3S8MY44S7F';
    $bigO['signature'] = 'AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy';
    $bigO['appId'] = 'APP-80W284485P519543T';
    //$bigO['apiKey']=null;
    //$bigO['apiSecret']=null;
    //$bigO['authorization']=null;
    $bigO['httpMethod'] = 'POST';
    $bigO['oauth'] = '';
    $bigO['methodUri'] = '';
    $bigO['methodName'] = 'ConvertCurrency';
    $bigO['dataFormat'] = '';
    $bigO['params'] = array();
    $bigO['params']['ConvertCurrencyRequest.requestEnvelope.errorLanguage'] = 'EN_US';
    $bigO['params']['ConvertCurrencyRequest.requestEnvelope.detailLevel'] = '';
    $bigO['params']['ConvertCurrencyRequest.baseAmountList.currency(0).code'] = $currencyFrom;
    $bigO['params']['ConvertCurrencyRequest.baseAmountList.currency(0).amount'] = $currencyAmount;
    $bigO['params']['ConvertCurrencyRequest.convertToCurrencyList(0).currencyCode'] = $currencyTo;
    //PAYPAL $bigO['params']['ConvertCurrencyRequest.convertToCurrencyList(2).currencyCode']='GBP';
    //THIS WOULD HAVE BEEN SO EASY
    /*PAYPAL API SUCKS SO HARD,
it allows you to convert FROM multiple currencies to a single currency in a single request,
but it does NOT allow you to convert TO multiple currencies in a single request.

Its possible we could get clever and calculate it ourselves, but...
*/
    $bigO['params']['ConvertCurrencyRequest.countryCode'] = '';
    $bigO['params']['ConvertCurrencyRequest.conversionType'] = '';
    $bigO['apiName'] = 'AdaptivePayments';

    $headers = [
        "X-PAYPAL-SECURITY-USERID: jb-us-seller_api1.paypal.com",
        "X-PAYPAL-SECURITY-PASSWORD: WX4WTU3S8MY44S7F",
        "X-PAYPAL-SECURITY-SIGNATURE: AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy",
        "X-PAYPAL-APPLICATION-ID: APP-80W284485P519543T",
        "X-PAYPAL-REQUEST-DATA-FORMAT: JSON",
        "X-PAYPAL-RESPONSE-DATA-FORMAT: JSON",
        "X-PAYPAL-DEVICE-IPADDRESS: 127.0.0.1",
        "X-PAYPAL-REQUEST-SOURCE: merchant-php-sdk-2.0.96",
        "X-PAYPAL-SANDBOX-EMAIL-ADDRESS: Platform.sdk.seller@gmail.com",
        "Content-Type: application/json",
        //"Accept-Language: en-US,en;q=0.8,nb;q=0.6",
        //"Cookie: filter=all; sort_method=activity",
        //"Origin: http://example.org",
    ];
    $url = "https://devtools-paypal.com/apiexplorer/processReq";
    //$url="http://192.168.3.105/dumppost.php";
    $ch = curl_init($url);
    //static $curl_cookiefiles_arr=array();//workaround for https://bugs.php.net/bug.php?id=66014
    //	 $curl_cookiefiles_arr[]=($tf=tmpfile());
    //	 $tf=stream_get_meta_data($tf);
    //	 $tf=$tf['uri'];
    curl_setopt_array($ch, array(CURLOPT_AUTOREFERER => true,
        CURLOPT_BINARYTRANSFER => true,
        CURLOPT_COOKIESESSION => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_FORBID_REUSE => false,
        CURLOPT_POST => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_CONNECTTIMEOUT => 10,
        CURLOPT_TIMEOUT => 11,
        CURLOPT_ENCODING => "",
        //		CURLOPT_COOKIEFILE=>$tf,
        //		CURLOPT_REFERER=>'http://example.org/',
        //CURLOPT_USERAGENT=>'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36',
    ));
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    $json = json_encode($bigO);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
    //shitty response. really. no kidding.  
    $shittyjsonresponse = curl_exec($ch);
    if (curl_errno($ch)) {
        throw new Exception('Curl error (curl_errno='.curl_errno($ch).
            ') on url '.var_export($url, true).
            ': '.curl_error($ch));
        // echo 'Curl error: ' . curl_error($ch);
    }
    $invalid_json_response_ex_str = "invalid json response from paypal! ";
    $d1 = json_decode($shittyjsonresponse, true);
    if (null === $d1) {
        throw new Exception($invalid_json_response_ex_str.
            " cannot json_decode data!");
    } //shit
    $response = json_decode($d1['response'], true);
    if ($response['responseEnvelope']['ack'] !== 'Success') {
        throw new Exception('blabla');
    }
    //need more white power!
    return $response['estimatedAmountTable']['currencyConversionList']['0']['currencyList']['currency']['0']['amount'];
}