платежный шлюз — проблема curl_init в переполнении стека

Когда я собираюсь получить доступ к PayPal (платежный шлюз) с локального хоста, я получил ошибку как

Неустранимая ошибка: необработанная ошибка: вызов неопределенной функции curl_init () в
/var/www/html/pp/temp/paypalfunctions.php:331 Трассировка стека: # 0
/var/www/html/pp/temp/paypalfunctions.php(90):
hash_call (‘SetExpressCheck …’, ‘&PAYMENTREQUEST … ‘) # 1
/var/www/html/pp/temp/expresscheckout.php(49):
CallShortcutExpressCheckout (NULL, ‘USD’, ‘Sale’, ‘Http: // localhos…»,
‘Http: // localhos…’) # 2 {главный} брошенный в
/var/www/html/pp/temp/paypalfunctions.php в строке 331

я имею paypalfunctions.php

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);/*   * ******************************************
PayPal API Module

Defines all the global variables and the wrapper functions
* ****************************************** */
$PROXY_HOST = '127.0.0.1';
$PROXY_PORT = '808';

$SandboxFlag = true;

//'------------------------------------
//' PayPal API Credentials
//' Replace <API_USERNAME> with your API Username
//' Replace <API_PASSWORD> with your API Password
//' Replace <API_SIGNATURE> with your Signature
//'------------------------------------
$API_UserName = "APU_USERNAME";
$API_Password = "API_PASS";
$API_Signature = "API_SIGNATURE";

// BN Code    is only applicable for partners
$sBNCode = "PP-ECWizard";/*
' Define the PayPal Redirect URLs.
'   This is the URL that the buyer is first sent to do authorize payment with their paypal account
'   change the URL depending if you are testing on the sandbox or the live PayPal site
'
' For the sandbox, the URL is       https://www.sandbox.paypal.com/webscr&cmd=_express-checkout&token=
' For the live site, the URL is        https://www.paypal.com/webscr&cmd=_express-checkout&token=
*/

if ($SandboxFlag == true) {
$API_Endpoint = "https://api-3t.sandbox.paypal.com/nvp";
$PAYPAL_URL = "https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token=";
} else {
$API_Endpoint = "https://api-3t.paypal.com/nvp";
$PAYPAL_URL = "https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=";
}

$USE_PROXY = false;
$version = "64";

if (session_id() == "")
session_start();

/* An express checkout transaction starts with a token, that
identifies to PayPal your transaction
In this example, when the script sees a token, the script
knows that the buyer has already authorized payment through
paypal.  If no token was found, the action is to send the buyer
to PayPal to first authorize payment
*/

/*
'-------------------------------------------------------------------------------------------------------------------------------------------
' Purpose:  Prepares the parameters for the SetExpressCheckout API Call.
' Inputs:
'       paymentAmount:      Total value of the shopping cart
'       currencyCodeType:   Currency code value the PayPal API
'       paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
'       returnURL:          the page where buyers return to after they are done with the payment review on PayPal
'       cancelURL:          the page where buyers return to when they cancel the payment review on PayPal
'--------------------------------------------------------------------------------------------------------------------------------------------
*/

function CallShortcutExpressCheckout($paymentAmount, $currencyCodeType, $paymentType, $returnURL, $cancelURL) {
//------------------------------------------------------------------------------------------------------------------------------------
// Construct the parameter string that describes the SetExpressCheckout API call in the shortcut implementation

$nvpstr = "&PAYMENTREQUEST_0_AMT=" . $paymentAmount;
$nvpstr = $nvpstr . "&PAYMENTREQUEST_0_PAYMENTACTION=" . $paymentType;
$nvpstr = $nvpstr . "&RETURNURL=" . $returnURL;
$nvpstr = $nvpstr . "&CANCELURL=" . $cancelURL;
$nvpstr = $nvpstr . "&PAYMENTREQUEST_0_CURRENCYCODE=" . $currencyCodeType;
//echo $nvpstr;exit;
$_SESSION["currencyCodeType"] = $currencyCodeType;
$_SESSION["PaymentType"] = $paymentType;
//'---------------------------------------------------------------------------------------------------------------
//' Make the API call to PayPal
//' If the API call succeded, then redirect the buyer to PayPal to begin to authorize payment.
//' If an error occured, show the resulting errors
//'---------------------------------------------------------------------------------------------------------------
$resArray = hash_call("SetExpressCheckout", $nvpstr);
$ack = strtoupper($resArray["ACK"]);
if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
$token = urldecode($resArray["TOKEN"]);
$_SESSION['TOKEN'] = $token;
}

return $resArray;
}

/*
'-------------------------------------------------------------------------------------------------------------------------------------------
' Purpose:  Prepares the parameters for the SetExpressCheckout API Call.
' Inputs:
'       paymentAmount:      Total value of the shopping cart
'       currencyCodeType:   Currency code value the PayPal API
'       paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
'       returnURL:          the page where buyers return to after they are done with the payment review on PayPal
'       cancelURL:          the page where buyers return to when they cancel the payment review on PayPal
'       shipToName:     the Ship to name entered on the merchant's site
'       shipToStreet:       the Ship to Street entered on the merchant's site
'       shipToCity:         the Ship to City entered on the merchant's site
'       shipToState:        the Ship to State entered on the merchant's site
'       shipToCountryCode:  the Code for Ship to Country entered on the merchant's site
'       shipToZip:          the Ship to ZipCode entered on the merchant's site
'       shipToStreet2:      the Ship to Street2 entered on the merchant's site
'       phoneNum:           the phoneNum  entered on the merchant's site
'--------------------------------------------------------------------------------------------------------------------------------------------
*/

function CallMarkExpressCheckout($paymentAmount, $currencyCodeType, $paymentType, $returnURL, $cancelURL, $shipToName, $shipToStreet, $shipToCity, $shipToState, $shipToCountryCode, $shipToZip, $shipToStreet2, $phoneNum
) {
//------------------------------------------------------------------------------------------------------------------------------------
// Construct the parameter string that describes the SetExpressCheckout API call in the shortcut implementation
//       $nvpstr = "&PAYMENTREQUEST_0_AMT=" . $paymentAmount;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_PAYMENTACTION=" . $paymentType;
//       $nvpstr = $nvpstr . "&RETURNURL=" . $returnURL;
//       $nvpstr = $nvpstr . "&CANCELURL=" . $cancelURL;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_CURRENCYCODE=" . $currencyCodeType;
//       $nvpstr = $nvpstr . "&ADDROVERRIDE=1";
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTONAME=" . $shipToName;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOSTREET=" . $shipToStreet;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOSTREET2=" . $shipToStreet2;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOCITY=" . $shipToCity;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOSTATE=" . $shipToState;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=" . $shipToCountryCode;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOZIP=" . $shipToZip;
//       $nvpstr = $nvpstr . "&PAYMENTREQUEST_0_SHIPTOPHONENUM=" . $phoneNum;$nvpstr = "&METHOD=SetExpressCheckout
&RETURNURL=http://localhost/trash/pp/response.php
&CANCELURL=http://localhost/trash/pp/response.php
&PAYMENTREQUEST_0_PAYMENTACTION=Sale
&L_PAYMENTREQUEST_0_NAME0=10% Decaf Kona Blend Coffee
&L_PAYMENTREQUEST_0_NUMBER0=623083
&L_PAYMENTREQUEST_0_DESC0=Size: 8.8-oz
&L_PAYMENTREQUEST_0_AMT0=9.95
&L_PAYMENTREQUEST_0_QTY0=2
&L_PAYMENTREQUEST_0_NAME1=Coffee Filter bags
&L_PAYMENTREQUEST_0_NUMBER1=623084
&L_PAYMENTREQUEST_0_DESC1=Size: Two 24-piece boxes
&L_PAYMENTREQUEST_0_AMT1=39.70
&L_PAYMENTREQUEST_0_QTY1=2
&PAYMENTREQUEST_0_ITEMAMT=99.30
&PAYMENTREQUEST_0_TAXAMT=2.58
&PAYMENTREQUEST_0_SHIPPINGAMT=3.00
&PAYMENTREQUEST_0_HANDLINGAMT=2.99
&PAYMENTREQUEST_0_SHIPDISCAMT=-3.00
&PAYMENTREQUEST_0_INSURANCEAMT=1.00
&PAYMENTREQUEST_0_AMT=105.87
&PAYMENTREQUEST_0_CURRENCYCODE=USD
&ALLOWNOTE=1";
$_SESSION["currencyCodeType"] = $currencyCodeType;
$_SESSION["PaymentType"] = $paymentType;

//'---------------------------------------------------------------------------------------------------------------
//' Make the API call to PayPal
//' If the API call succeded, then redirect the buyer to PayPal to begin to authorize payment.
//' If an error occured, show the resulting errors
//'---------------------------------------------------------------------------------------------------------------
$resArray = hash_call("SetExpressCheckout", $nvpstr);
echo '<pre>';print_r($resArray);exit;
$ack = strtoupper($resArray["ACK"]);
if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
$token = urldecode($resArray["TOKEN"]);
$_SESSION['TOKEN'] = $token;
}

return $resArray;
}

/*
'-------------------------------------------------------------------------------------------
' Purpose:  Prepares the parameters for the GetExpressCheckoutDetails API Call.
'
' Inputs:
'       None
' Returns:
'       The NVP Collection object of the GetExpressCheckoutDetails Call Response.
'-------------------------------------------------------------------------------------------
*/

function GetShippingDetails($token) {
//'--------------------------------------------------------------
//' At this point, the buyer has completed authorizing the payment
//' at PayPal.  The function will call PayPal to obtain the details
//' of the authorization, incuding any shipping information of the
//' buyer.  Remember, the authorization is not a completed transaction
//' at this state - the buyer still needs an additional step to finalize
//' the transaction
//'--------------------------------------------------------------
//'---------------------------------------------------------------------------
//' Build a second API request to PayPal, using the token as the
//'  ID to get the details on the payment authorization
//'---------------------------------------------------------------------------
$nvpstr = "&TOKEN=" . $token;

//'---------------------------------------------------------------------------
//' Make the API call and store the results in an array.
//'  If the call was a success, show the authorization details, and provide
//'  an action to complete the payment.
//'  If failed, show the error
//'---------------------------------------------------------------------------
$resArray = hash_call("GetExpressCheckoutDetails", $nvpstr);
$ack = strtoupper($resArray["ACK"]);
if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
$_SESSION['payer_id'] = $resArray['PAYERID'];
}
return $resArray;
}

/*
'-------------------------------------------------------------------------------------------------------------------------------------------
' Purpose:  Prepares the parameters for the GetExpressCheckoutDetails API Call.
'
' Inputs:
'       sBNCode:    The BN code used by PayPal to track the transactions from a given shopping cart.
' Returns:
'       The NVP Collection object of the GetExpressCheckoutDetails Call Response.
'--------------------------------------------------------------------------------------------------------------------------------------------
*/

function ConfirmPayment($FinalPaymentAmt) {
/* Gather the information to make the final call to
finalize the PayPal payment.  The variable nvpstr
holds the name value pairs
*///Format the other parameters that were stored in the session from the previous calls
$token = urlencode($_SESSION['TOKEN']);
$paymentType = urlencode($_SESSION['PaymentType']);
$currencyCodeType = urlencode($_SESSION['currencyCodeType']);
$payerID = urlencode($_SESSION['payer_id']);

$serverName = urlencode($_SERVER['SERVER_NAME']);

$nvpstr = '&TOKEN=' . $token . '&PAYERID=' . $payerID . '&PAYMENTREQUEST_0_PAYMENTACTION=' . $paymentType . '&PAYMENTREQUEST_0_AMT=' . $FinalPaymentAmt;
$nvpstr .= '&PAYMENTREQUEST_0_CURRENCYCODE=' . $currencyCodeType . '&IPADDRESS=' . $serverName;

/* Make the call to PayPal to finalize payment
If an error occured, show the resulting errors
*/
$resArray = hash_call("DoExpressCheckoutPayment", $nvpstr);

/* Display the API response back to the browser.
If the response from PayPal was a success, display the response parameters'
If the response was an error, display the errors received using APIError.php.
*/
$ack = strtoupper($resArray["ACK"]);

return $resArray;
}

/*
'-------------------------------------------------------------------------------------------------------------------------------------------
' Purpose:  This function makes a DoDirectPayment API call
'
' Inputs:
'       paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
'       paymentAmount:      total value of the shopping cart
'       currencyCode:       currency code value the PayPal API
'       firstName:          first name as it appears on credit card
'       lastName:           last name as it appears on credit card
'       street:             buyer's street address line as it appears on credit card
'       city:               buyer's city
'       state:              buyer's state
'       countryCode:        buyer's country code
'       zip:                buyer's zip
'       creditCardType:     buyer's credit card type (i.e. Visa, MasterCard ... )
'       creditCardNumber:   buyers credit card number without any spaces, dashes or any other characters
'       expDate:            credit card expiration date
'       cvv2:               Card Verification Value
'
'-------------------------------------------------------------------------------------------
'
' Returns:
'       The NVP Collection object of the DoDirectPayment Call Response.
'--------------------------------------------------------------------------------------------------------------------------------------------
*/

function DirectPayment($paymentType, $paymentAmount, $creditCardType, $creditCardNumber, $expDate, $cvv2, $firstName, $lastName, $street, $city, $state, $zip, $countryCode, $currencyCode) {
//Construct the parameter string that describes DoDirectPayment
$nvpstr = "&AMT=" . $paymentAmount;
$nvpstr = $nvpstr . "&CURRENCYCODE=" . $currencyCode;
$nvpstr = $nvpstr . "&PAYMENTACTION=" . $paymentType;
$nvpstr = $nvpstr . "&CREDITCARDTYPE=" . $creditCardType;
$nvpstr = $nvpstr . "&ACCT=" . $creditCardNumber;
$nvpstr = $nvpstr . "&EXPDATE=" . $expDate;
$nvpstr = $nvpstr . "&CVV2=" . $cvv2;
$nvpstr = $nvpstr . "&FIRSTNAME=" . $firstName;
$nvpstr = $nvpstr . "&LASTNAME=" . $lastName;
$nvpstr = $nvpstr . "&STREET=" . $street;
$nvpstr = $nvpstr . "&CITY=" . $city;
$nvpstr = $nvpstr . "&STATE=" . $state;
$nvpstr = $nvpstr . "&COUNTRYCODE=" . $countryCode;
$nvpstr = $nvpstr . "&IPADDRESS=" . $_SERVER['REMOTE_ADDR'];

$resArray = hash_call("DoDirectPayment", $nvpstr);

return $resArray;
}

/**
'-------------------------------------------------------------------------------------------------------------------------------------------
* hash_call: Function to perform the API call to PayPal using API signature
* @methodName is name of API  method.
* @nvpStr is nvp string.
* returns an associtive array containing the response from the server.
'-------------------------------------------------------------------------------------------------------------------------------------------
*/
function hash_call($methodName, $nvpStr) {

//declaring of global variables
global $API_Endpoint, $version, $API_UserName, $API_Password, $API_Signature;
global $USE_PROXY, $PROXY_HOST, $PROXY_PORT;
global $gv_ApiErrorURL;
global $sBNCode;

//setting the curl parameters.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
curl_setopt($ch, CURLOPT_VERBOSE, 1);

//turning off the server and peer verification(TrustManager Concept).
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);

//if USE_PROXY constant set to TRUE in Constants.php, then only proxy will be enabled.
//Set proxy name to PROXY_HOST and port number to PROXY_PORT in constants.php
if ($USE_PROXY)
curl_setopt($ch, CURLOPT_PROXY, $PROXY_HOST . ":" . $PROXY_PORT);

//NVPRequest for submitting to server
$nvpreq = "METHOD=" . urlencode($methodName) . "&VERSION=" . urlencode($version) . "&PWD=" . urlencode($API_Password) . "&USER=" . urlencode($API_UserName) . "&SIGNATURE=" . urlencode($API_Signature) . $nvpStr . "&BUTTONSOURCE=" . urlencode($sBNCode);

//setting the nvpreq as POST FIELD to curl
curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);

//getting response from server
$response = curl_exec($ch);

//convrting NVPResponse to an Associative Array
$nvpResArray = deformatNVP($response);
$nvpReqArray = deformatNVP($nvpreq);
$_SESSION['nvpReqArray'] = $nvpReqArray;

if (curl_errno($ch)) {
// moving to display page to display curl errors
$_SESSION['curl_error_no'] = curl_errno($ch);
$_SESSION['curl_error_msg'] = curl_error($ch);

//Execute the Error handling module to display errors.
} else {
//closing the curl
curl_close($ch);
}

return $nvpResArray;
}

/* '----------------------------------------------------------------------------------
Purpose: Redirects to PayPal.com site.
Inputs:  NVP string.
Returns:
----------------------------------------------------------------------------------
*/

function RedirectToPayPal($token) {
global $PAYPAL_URL;

// Redirect to paypal.com here
$payPalURL = $PAYPAL_URL . $token;
echo $payPalURL;exit;
header("Location: " . $payPalURL);
}

/* '----------------------------------------------------------------------------------
* This function will take NVPString and convert it to an Associative Array and it will decode the response.
* It is usefull to search for a particular key and displaying arrays.
* @nvpstr is NVPString.
* @nvpArray is Associative Array.
----------------------------------------------------------------------------------
*/

function deformatNVP($nvpstr) {
$intial = 0;
$nvpArray = array();

while (strlen($nvpstr)) {
//postion of Key
$keypos = strpos($nvpstr, '=');
//position of value
$valuepos = strpos($nvpstr, '&') ? strpos($nvpstr, '&') : strlen($nvpstr);

/* getting the Key and Value values and storing in a Associative Array */
$keyval = substr($nvpstr, $intial, $keypos);
$valval = substr($nvpstr, $keypos + 1, $valuepos - $keypos - 1);
//decoding the respose
$nvpArray[urldecode($keyval)] = urldecode($valval);
$nvpstr = substr($nvpstr, $valuepos + 1, strlen($nvpstr));
}
return $nvpArray;
}

?>

Я устанавливаю curl используя

sudo apt-get install php-curl

Бу еще проблема. Любая помощь будет оценена