Is a valid paypal email address or not (PHP)

Question

I am using paypal adaptive payments and i need to verify email address from paypal api given by the store/seller, so that the payment can be directly given to store by custo

Answer 1

    $email_pay=json_decode($this->config->item('paypal_payment')); 
    $paypal_email=$email_pay->email;
    $paypal_username=$email_pay->username;
    $paypal_password=$email_pay->password;
    $paypal_appid=$email_pay->appid;
    $paypal_signature=$email_pay->signature;
    $mode=$email_pay->mode;
    if($mode==0)
    {
        $API_Endpoint = "https://svcs.sandbox.paypal.com/AdaptiveAccounts/GetVerifiedStatus";
    }
    else
    {
        $API_Endpoint = "https://svcs.paypal.com/AdaptiveAccounts/GetVerifiedStatus";
    }

    $ret['error_new']='';   
    $payLoad["emailAddress"]=$_POST['paypal_email'];
    $payLoad["matchCriteria"]="NONE";       $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    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);
    curl_setopt($ch, CURLOPT_HTTPHEADER,  array(
        'X-PAYPAL-REQUEST-DATA-FORMAT: JSON',
        'X-PAYPAL-RESPONSE-DATA-FORMAT: JSON',
        'X-PAYPAL-SECURITY-USERID: '. $paypal_username,
        'X-PAYPAL-SECURITY-PASSWORD: '. $paypal_password,
        'X-PAYPAL-SECURITY-SIGNATURE: '. $paypal_signature,
        'X-PAYPAL-APPLICATION-ID: '. $paypal_appid
    ));  
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payLoad));
    $response = curl_exec($ch);
    $response = json_decode($response, 1); 
    if(empty($response['error'])){
        //valid account
    }
    else{
        $ret['error_new']='Please enter valid paypal email id.';    
    }

    }       
    else
    {           
        $ret['status']=0;
    }
    echo json_encode($ret);