Question

每当我尝试更改某些内容时，我都会收到标题中提到的错误。我试着查一下，但我真的不明白我找到的答案。导致此错误的原因以及如何解决此问题。例如，我尝试更改一个href链接，我得到这个错误，不知道是什么原因导致它。之前我认为它与你的PHP代码标题的顺序有关应该总是在正文之前，之后你不能再改变标题了。但是如果像href链接这样的小东西会导致它还有其他事情发生。

警告：无法修改标头信息 - 已发送的标头（输出始于 /home/nieuwsman/domains/cdwp.publiceer.net/public_html/wp-content/themes/wpoupon_mollie/ideal.class.php:1）在 /home/nieuwsman/domains/cdwp.publiceer.net/public_html/wp-content/themes/wpoupon_mollie/functions.php 在第28行

function wpoupon_redirect_to_mollie() {

    require_once('ideal.class.php');

    if (!in_array('ssl', stream_get_transports()))
    {
        echo "<h1>Foutmelding</h1>";
        echo "<p>Uw PHP installatie heeft geen SSL ondersteuning. SSL is nodig voor de communicatie met de Mollie iDEAL API.</p>";
        exit;
    }

    $partner_id  = 823997; 
    $amount      = $_POST['amount']; 
    $description = $_POST['item_name'];
    $return_url  = $_POST['return'];
    $report_url  = $_POST['notify_url'];

    $iDEAL = new iDEAL_Payment($partner_id);
    //$iDEAL->setTestMode();

    if (isset($_POST['bank_id']) and !empty($_POST['bank_id'])) 
    {
        if ($iDEAL->createPayment($_POST['bank_id'], $amount, $description, $return_url, $report_url)) 
        {           
            header("Location: " . $iDEAL->getBankURL());
            exit;   
        } else {
            echo $iDEAL->getErrorMessage();
        }
    }

}

第28行的

错误

但我不想只修改一段代码我想知道它是如何工作的。

Ideal.class.php

<?php
/*-----------------------------------------------------------------------
  Start              : 24 februari 2009
  Door               : Mollie B.V. (RDF) © 2009

  Versie             : 1.13 (gebaseerd op de Mollie iDEAL class van
                       Concepto IT Solution - http://www.concepto.nl/)
  Laatste aanpassing : 18-04-2011
  Aard v. aanpassing : Ondersteuning voor het nieuwe 'status' veld
  Door               : MK
    -----------------------------------------------------------------------*/

class iDEAL_Payment
{
protected $bank_id         = null;
protected $amount          = 0;
protected $description     = null;
protected $return_url      = null;
protected $report_url      = null;

protected $bank_url        = null;
protected $payment_url     = null;

protected $transaction_id  = null;
protected $paid_status     = false;
protected $consumer_info   = array();

protected $error_message   = '';
protected $error_code      = 0;

protected $api_host        = 'ssl://secure.mollie.nl';
protected $api_port        = 443;

public function __construct ($partner_id, $api_host = 'ssl://secure.mollie.nl', $api_port = 443)
{
    $this->partner_id = $partner_id;
    $this->api_host   = $api_host;
    $this->api_port   = $api_port;
}

// Haal de lijst van beschikbare banken
public function getBanks()
{
    $query_variables = array (
        'a'          => 'banklist',
        'partner_id' => $this->partner_id,
    );

    if ($this->testmode) {
        $query_variables['testmode'] = 'true';
    }

    $banks_xml = $this->_sendRequest (
        $this->api_host,
        $this->api_port,
        '/xml/ideal/',
        http_build_query($query_variables, '', '&')
    );

    if (empty($banks_xml)) {
        return false;
    }

    $banks_object = $this->_XMLtoObject($banks_xml);

    if (!$banks_object or $this->_XMlisError($banks_object)) {
        return false;
    }

    $banks_array = array();

    foreach ($banks_object->bank as $bank) {
        $banks_array["{$bank->bank_id}"] = "{$bank->bank_name}";
    }

    return $banks_array;
}

// Zet een betaling klaar bij de bank en maak de betalings URL beschikbaar
public function createPayment ($bank_id, $amount, $description, $return_url, $report_url)
{
    if (!$this->setBankId($bank_id) or
        !$this->setDescription($description) or
        !$this->setAmount($amount) or
        !$this->setReturnUrl($return_url) or
        !$this->setReportUrl($report_url))
    {
        if (!$this->setAmount($amount))
            $this->error_message = "Error! Minimal Amount to pay: ". self::MIN_TRANS_AMOUNT;
        else
            $this->error_message = "De opgegeven betalings gegevens zijn onjuist of incompleet.";
        return false;
    }

    $query_variables = array (
        'a'           => 'fetch',
        'partnerid'   => $this->getPartnerId(),
        'bank_id'     => $this->getBankId(),
        'amount'      => $this->getAmount(),
        'description' => $this->getDescription(),
        'reporturl'   => $this->getReportURL(),
        'returnurl'   => $this->getReturnURL(),
    );

    if ($this->profile_key)
        $query_variables['profile_key'] = $this->profile_key;

    $create_xml = $this->_sendRequest(
        $this->api_host,
        $this->api_port,
        '/xml/ideal/',
        http_build_query($query_variables, '', '&')         
    );

    if (empty($create_xml)) {
        return false;
    }

    $create_object = $this->_XMLtoObject($create_xml);

    if (!$create_object or $this->_XMLisError($create_object)) {
        return false;
    }

    $this->transaction_id = (string) $create_object->order->transaction_id;
    $this->bank_url       = (string) $create_object->order->URL;

    return true;
}

// Kijk of er daadwerkelijk betaald is
public function checkPayment ($transaction_id)
{
    if (!$this->setTransactionId($transaction_id)) {
        $this->error_message = "Er is een onjuist transactie ID opgegeven";
        return false;
    }

    $query_variables = array (
        'a'              => 'check',
        'partnerid'      => $this->partner_id,
        'transaction_id' => $this->getTransactionId(),
    );

    if ($this->testmode) {
        $query_variables['testmode'] = 'true';
    }

    $check_xml = $this->_sendRequest(
        $this->api_host,
        $this->api_port,
        '/xml/ideal/',
        http_build_query($query_variables, '', '&')
        );

    if (empty($check_xml))
        return false;

    $check_object = $this->_XMLtoObject($check_xml);

    if (!$check_object or $this->_XMLisError($check_object)) {
        return false;
    }

    $this->paid_status   = (bool) ($check_object->order->payed == 'true');
    $this->status        = (string) $check_object->order->status;
    $this->amount        = (int) $check_object->order->amount;
    $this->consumer_info = (isset($check_object->order->consumer)) ? (array) $check_object->order->consumer : array();

    return true;
}

public function CreatePaymentLink ($description, $amount)
{
    if (!$this->setDescription($description) or !$this->setAmount($amount))
    {
        $this->error_message = "U moet een omschrijving én bedrag (in centen) opgeven voor de iDEAL link. Tevens moet het bedrag minstens " . self::MIN_TRANS_AMOUNT . ' eurocent zijn. U gaf ' . (int) $amount . ' cent op.';
        return false;
    }

    $query_variables = array (
        'a'           => 'create-link',
        'partnerid'   => $this->partner_id,
        'amount'      => $this->getAmount(),
        'description' => $this->getDescription(),
    );

    $create_xml = $this->_sendRequest(
        $this->api_host,
        $this->api_port,
        '/xml/ideal/',
        http_build_query($query_variables, '', '&')
        );

    $create_object = $this->_XMLtoObject($create_xml);

    if (!$create_object or $this->_XMLisError($create_object)) {
        return false;
    }

    $this->payment_url = (string) $create_object->link->URL;
}

/ * 受保护的功能 * /

protected function _sendRequest ($host, $port, $path, $data)
{
    if (function_exists('curl_init')) {
        return $this->_sendRequestCurl($host, $port, $path, $data);
    }
    else {
        return $this->_sendRequestFsock($host, $port, $path, $data);
    }
}

protected function _sendRequestFsock ($host, $port, $path, $data)
{
    $hostname = str_replace('ssl://', '', $host);
    $fp = @fsockopen($host, $port, $errno, $errstr);
    $buf = '';

    if (!$fp)
    {
        $this->error_message = 'Kon geen verbinding maken met server: ' . $errstr;
        $this->error_code       = 0;

        return false;
    }

    @fputs($fp, "POST $path HTTP/1.0\n");
    @fputs($fp, "Host: $hostname\n");
    @fputs($fp, "Content-type: application/x-www-form-urlencoded\n");
    @fputs($fp, "Content-length: " . strlen($data) . "\n");
    @fputs($fp, "Connection: close\n\n");
    @fputs($fp, $data);

    while (!feof($fp)) {
        $buf .= fgets($fp, 128);
    }

    fclose($fp);

    if (empty($buf))
    {
        $this->error_message = 'Zero-sized reply';
        return false;
    }
    else {
        list($headers, $body) = preg_split("/(\r?\n){2}/", $buf, 2);
    }

    return $body;
}

protected function _sendRequestCurl ($host, $port, $path, $data)
{
    $host = str_replace('ssl://', 'https://', $host);

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, $host . $path);
    curl_setopt($ch, CURLOPT_PORT, $port);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);        

    $body = curl_exec($ch);

    curl_close($ch);

    return $body;   
}

protected function _XMLtoObject ($xml)
{
    try
    {
        $xml_object = new SimpleXMLElement($xml);
        if ($xml_object == false)
        {
            $this->error_message = "Kon XML resultaat niet verwerken";
            return false;
        }
    }
    catch (Exception $e) {
        return false;
    }

    return $xml_object;
}

protected function _XMLisError($xml)
{
    if (isset($xml->item))
    {
        $attributes = $xml->item->attributes();
        if ($attributes['type'] == 'error')
        {
            $this->error_message = (string) $xml->item->message;
            $this->error_code    = (string) $xml->item->errorcode;

            return true;
        }
    }

    return false;
}


/* Getters en setters */
public function setProfileKey($profile_key)
{       
    if (is_null($profile_key))
        return false;

    return ($this->profile_key = $profile_key);
}

public function getProfileKey()
{
    return $this->profile_key;
}

public function setPartnerId ($partner_id)
{
    if (!is_numeric($partner_id)) {
        return false;
    }

    return ($this->partner_id = $partner_id);
}

public function getPartnerId ()
{
    return $this->partner_id;
}

public function setTestmode ($enable = true)
{
    return ($this->testmode = $enable);
}

public function setBankId ($bank_id)
{
    if (!is_numeric($bank_id))
        return false;

    return ($this->bank_id = $bank_id);
}

public function getBankId ()
{
    return $this->bank_id;
}

public function setAmount ($amount)
{
    if (!preg_match('~^[0-9]+$~', $amount)) {
        return false;
    }

    if (self::MIN_TRANS_AMOUNT > $amount) {
        return false;
    }

    return ($this->amount = $amount);
}

public function getAmount ()
{
    return $this->amount;
}

public function setDescription ($description)
{
    $description = substr($description, 0, 29);

    return ($this->description = $description);
}

public function getDescription ()
{
    return $this->description;
}

public function setReturnURL ($return_url)
{
    if (!preg_match('|(\w+)://([^/:]+)(:\d+)?(.*)|', $return_url))
        return false;

    return ($this->return_url = $return_url);
}

public function getReturnURL ()
{
    return $this->return_url;
}

public function setReportURL ($report_url)
{
    if (!preg_match('|(\w+)://([^/:]+)(:\d+)?(.*)|', $report_url)) {
        return false;
    }

    return ($this->report_url = $report_url);
}

public function getReportURL ()
{
    return $this->report_url;
}

public function setTransactionId ($transaction_id)
{
    if (empty($transaction_id))
        return false;

    return ($this->transaction_id = $transaction_id);
}

public function getTransactionId ()
{
    return $this->transaction_id;
}

public function getBankURL ()
{
    return $this->bank_url;
}

public function getPaymentURL ()
{
    return (string) $this->payment_url;
}

public function getPaidStatus ()
{
    return $this->paid_status;
}

public function getBankStatus()
{
    return $this->status;
}

public function getConsumerInfo ()
{
    return $this->consumer_info;
}

public function getErrorMessage ()
{
    return $this->error_message;
}

public function getErrorCode ()
{
    return $this->error_code;
}

}

Answer 1

在您的php页面上写ob_start();。希望这对你有用。

Answer 2

如果您已打印内容并稍后调用header()功能，则会发生此错误。

这里：

echo $iDEAL->getBankURL();

您正在显示一些文字。在您开始显示某些内容后，您无法使用header("Location")。如果您想使用header("Location")进行重定向，请删除此echo。

if ($iDEAL->createPayment($_POST['bank_id'], $amount, $description, $return_url, $report_url)) 
{           
    // Removed line : this content should never been displayed since you're redirecting just after.
    header("Location: " . $iDEAL->getBankURL());
    exit;   
} else {
    echo $iDEAL->getErrorMessage();
}

警告：无法修改标头信息 - 已发送的标头

2 个答案: