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mutliple Warning: Cannot modify header information

jonnyfortis

By jonnyfortis
in PHP Coding Help

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jonnyfortis Member

jonnyfortis

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I have been looking through the forum regarding this a alot of peoples problems are white space or the session needs to go at the top of the page before ANYTHING else.

 

i am getting the following errors 

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 2

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 3

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 4

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 5

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/XCInc/XCart.inc on line 4

the code i have in the page is (starting at line 1)

<?php require_once('Connections/lotties.php');
header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");    	        // Date in the past
header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
header ("Cache-Control: no-cache, must-revalidate");  	        // HTTP/1.1
header ("Pragma: no-cache");        

if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}


if ((isset($_POST["MM_update"])) && ($_POST["MM_update"] == "form2")) {
  $updateSQL = sprintf("UPDATE LOTTIE_voucher SET vouchCode=%s WHERE vouchID=%s",
                       GetSQLValueString($_POST['vouchCode'], "text"),
                       GetSQLValueString($_POST['vouchID'], "int"));

  mysql_select_db($database_lotties, $lotties);
  $Result1 = mysql_query($updateSQL, $lotties) or die(mysql_error());
}


// *** X Shopping Cart ***
$useSessions = true;
$XCName = "LottieJakeCart";
$XCTimeout = 30;
$XC_ColNames=array("ProductID","Quantity","Name","Price","Stock","Total");
$XC_ComputedCols=array("","","","","","Price");
require_once('XCInc/XCart.inc');

mysql_select_db($database_lotties, $lotties);
$query_rsVoucher = "SELECT * FROM LOTTIE_vouchercode";
$rsVoucher = mysql_query($query_rsVoucher, $lotties) or die(mysql_error());
$row_rsVoucher = mysql_fetch_assoc($rsVoucher);
$totalRows_rsVoucher = mysql_num_rows($rsVoucher);

// *** Update contents of Shopping Cart *** 
require_once('XCInc/XCupdateAction.inc');
if (isset($_POST["Quantity"])) {
  $XC_UpdateRedirect = "shopping-cart.php";
  $values = $_POST["Quantity"];
  require_once('XCInc/UpdateXCart.inc');
}

// *** Empty XCart ***
if (isset($_SERVER["QUERY_STRING"])) {
  $XC_EmptyCartLink = $_SERVER["PHP_SELF"] . "?" . htmlentities($_SERVER["QUERY_STRING"]) . "&XC_EmptyCart=1";
} else {
  $XC_EmptyCartLink = $_SERVER["PHP_SELF"] . "?XC_EmptyCart=1";
}
if (isset($_GET["XC_EmptyCart"]) && ($_GET["XC_EmptyCart"] == "1")) {
  $XC_EmptyCartRedirect = "shopping-cart.php";
  require_once('XCInc/XCemptyRedirect.inc');
}

// *** Repeat XCart region *** (do not remove this label) 

// voucher code
if (isset($_POST['vouchCode']) && $_POST['vouchCode'] == $row_rsVoucher['VCode']) {
  $mycode = $row_rsVoucher['VCode'];
  $spos = strpos($mycode, "c");
  if ($spos !== false) {
    $myvalue = substr($mycode, $spos+1);
    $myvalue = $XCart_sumTotal * $myvalue / 100;
  } else {
    $spos = strpos($mycode, "p");
    if ($spos !== false) {
      $myvalue = substr($mycode, $spos+1);
    }
  }
  $myTotal = $XCart_sumTotal - $myvalue;
  $_SESSION['vouchCode'] = $myvalue;
} else unset($_SESSION['vouchCode']);

function DoFormatCurrency($num,$dec,$sdec,$sgrp,$sym,$cnt) {
  setlocale(LC_MONETARY, $cnt);
  if ($sdec == "C") {
    $locale_info = localeconv();
    $sdec = $locale_info["mon_decimal_point"];
    $sgrp = $sgrp!="" ? $locale_info["mon_thousands_sep"] : "";
    $sym = $cnt!="" ? $locale_info["currency_symbol"] : $sym;
  }
  $thenum = $sym.number_format($num,$dec,$sdec,$sgrp);
  return $thenum;
}
?>

the code is the shopping cart with the ability to add a discount vouchers for example

 

lot123p10
 
would be %10 of the total
 
can anyone see what i am doing wrong?
 
thanks in advance
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mac_gyver Prolific Member

mac_gyver

Posted
Posted

change your first line of code to the following so that you can determine if the problem is before the <?php tag or due to something in the required file -

<?php
 require_once('Connections/lotties.php');

where does the error message state the output is occurring at after you make this change?

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jonnyfortis Member

jonnyfortis

Posted
  • Author
Posted

change your first line of code to the following so that you can determine if the problem is before the <?php tag or due to something in the required file -

<?php
 require_once('Connections/lotties.php');

where does the error message state the output is occurring at after you make this change?

 

one line down

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 3

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 4

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 5

Warning: Cannot modify header information - headers already sent by (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in /homepages/6/d330188495/htdocs/beta/shopping-cart.php on line 6

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /homepages/6/d330188495/htdocs/beta/shopping-cart.php:1) in/homepages/6/d330188495/htdocs/beta/XCInc/XCart.inc on line 4
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mac_gyver Prolific Member

mac_gyver

Posted
Posted

since the OUTPUT is still occurring on line 1 of your file, you either have some character(s) in your file before the <?php tag OR your file is saved as a UTF-8 encoded file with the Byte Order Mark characters as part of the file.

 

make sure you have nothing before the <?php tag in your file and make sure that if you must save the file as a UTF-8 encoded file that you save it without Byte Order Mark charters or save the file as an ascii encoded file (i.e. not a UTF-8 encoded file.)

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jonnyfortis Member

jonnyfortis

Posted
  • Author
Posted

since the OUTPUT is still occurring on line 1 of your file, you either have some character(s) in your file before the <?php tag OR your file is saved as a UTF-8 encoded file with the Byte Order Mark characters as part of the file.

 

make sure you have nothing before the <?php tag in your file and make sure that if you must save the file as a UTF-8 encoded file that you save it without Byte Order Mark charters or save the file as an ascii encoded file (i.e. not a UTF-8 encoded file.)

i dont appear to have anything before the <?php tag a

 

i have tried both

 

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 
and
 
<meta http-equiv="Content-Type" content="text/html; charset= "utf8_general_ci" />
 
but both are returning the same errors
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jonnyfortis Member

jonnyfortis

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  • Author
Posted (edited)

saving your file without the Byte Order Mark characters has nothing to do with a HTML <meta tag. it's how you save the file in your editor.

ok i was using dreamweaver and it had the save Byte Order Mark ticked. I now longer have the error but  my script isn't working for the discount script

Edited by jonnyfortis
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