WARNING: Cannot modify header information - redirects with the server behaviors

I know it's an old question, but I can't find the answer.  I get an error when you use the update of the server behavior redirects the Add record  I get the error message: warning: cannot modify header information - headers already sent by (output began to...)

I deleted as much white space before the header() function and I still get the error.

<? php require_once('.. / Connections/Old4thDB.php');? >

<? PHP

If (! function_exists ("GetSQLValueString")) {}

function GetSQLValueString ($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")

{

If (via 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 "set":

$theValue = ($theValue! = "")? $theDefinedValue: $theNotDefinedValue;

break;

}

Return $theValue;

}

}

$editFormAction = $_SERVER ['PHP_SELF'];

If (isset {}

$editFormAction. = « ? ». htmlentities($_SERVER['QUERY_STRING']);

}

If ((isset($_POST["MM_update"])) & & ($_POST ["MM_update"] == "UpdateVarietyForm")) {}

$updateSQL = sprintf ("setting a DAY various SET varietyName = %s varietyType = %s varietyAlphaAcidGeneral = %s, varietyBetaAcidGeneral = %s, varietyOld4thAA = %s, varietyOld4thBA = %s, varietyEssenOil1 = %s, varietyEssenOil2 = %s, varietyEssenOil3 = %s, varietyEssenOil4 = %s, varietyEssenOil5 = %s, varietyEssenOil6 = %s WHERE variety_id = %s",

GetSQLValueString ($_POST ['varietyName'], "text").

GetSQLValueString ($_POST ['varietyType'], "text").

GetSQLValueString ($_POST ['varietyAlphaAcidGeneral'], "text").

GetSQLValueString ($_POST ['varietyBetaAcidGeneral'], "text").

GetSQLValueString ($_POST ['varietyOld4thAA'], "text").

GetSQLValueString ($_POST ['varietyOld4thBA'], "text").

GetSQLValueString ($_POST ['varietyEssenOil1'], "text").

GetSQLValueString ($_POST ['varietyEssenOil2'], "text").

GetSQLValueString ($_POST ['varietyEssenOil3'], "text").

GetSQLValueString ($_POST ['varietyEssenOil4'], "text").

GetSQLValueString ($_POST ['varietyEssenOil5'], "text").

GetSQLValueString ($_POST ['varietyEssenOil6'], "text").

GetSQLValueString ($_POST ["'recordID"], "int"));

@mysql_select_db ($database_Old4thDB, $Old4thDB);

$Result1 = mysql_query ($updateSQL, $Old4thDB) or die (mysql_error ());

$updateGoTo = "varieties.php";

If (isset {}

$updateGoTo. = (strpos ($updateGoTo, '?'))? « & » : « ? » ;

$updateGoTo. = $_SERVER ['QUERY_STRING'];

}

header (sprintf ("location: %s", $updateGoTo));

}

@mysql_select_db ($database_Old4thDB, $Old4thDB);

$query_rsUpdateVariety = "SELECT * FROM variety";

$rsUpdateVariety = mysql_query ($query_rsUpdateVariety, $Old4thDB) or die (mysql_error ());

$row_rsUpdateVariety = mysql_fetch_assoc ($rsUpdateVariety);

$totalRows_rsUpdateVariety = mysql_num_rows ($rsUpdateVariety);

? >

Am I missing other setups/configurations that could cause this?

You forgot the most important part of the error message. "Output started at..." tells you where the production has started, guiding you to correct the error.

The most common cause of this error is a space outside of an include file PHP tags. Most likely guilty is one or more new lines after the closing PHP tag in Old4thDB.php. Remove the closing tag PHP in this folder will be probably solved the problem.

Another possible cause is using the BOM (byte order mark) on a PHP page. Make sure that the check box for the BOM is deselected in the Save dialog box.

Tags: Dreamweaver

Similar Questions

  • WARNING: Cannot modify header information error

    This is the error i recieve when I use the log in system of my website. The session ID is correctly sent to the database and the form is processed.
Although, when it comes to redirecting to the logged in homepage this error appears. I have tested this exact script with no problems in my computers local host.
WHen uploaded online and tested tho the error appears. Please help!:
Warning: Cannot modify header information - headers already sent by (output started at /home/gr/public_html/members_login_handle.php:6) in /home/gr/public_html/members_login_handle.php on line 97.

The coding for the members_login_handle.php which processes my members_login.php form to login is below:

<?php
session_start();
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><!-- InstanceBegin template="/Templates/main_template.dwt" codeOutsideHTMLIsLocked="false" -->
<head>
<script type="text/javascript">
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var message="";
///////////////////////////////////
function clickIE() {if (document.all) {(message);return false;}}
function clickNS(e) {if
(document.layers||(document.getElementById&&!document.all)) {
if (e.which==2||e.which==3) {(message);return false;}}}
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{document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;}
else{document.onmouseup=clickNS;document.oncontextmenu=clickIE;}

document.oncontextmenu=new Function("return false")
// -->

function disSel(target){
if (typeof target.onselectstart!="undefined")
    target.onselectstart=function(){return false}
else if (typeof target.style.MozUserSelect!="undefined")
    target.style.MozUserSelect="none"
else
    target.onmousedown=function(){return false}
target.style.cursor = "default"
}
</script>

<script type="text/javascript">
window.onload = function () {
document.body.onselectstart = function () {
return false;
}
document.body.ondragstart = function () {
return false;
}
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- InstanceBeginEditable name="doctitle" -->
<title>Staff Login</title>

<!-- InstanceEndEditable -->
<!-- InstanceBeginEditable name="seo" -->
<meta name="Description" content="" />
<meta name="Keywords" content="" />
<!-- InstanceEndEditable -->
<!-- InstanceBeginEditable name="head" -->
<!-- InstanceEndEditable -->    
<link href="../stylesheets/main_styles.css" rel="stylesheet" type="text/css" />
</head>

<body>
<div id="wrap">
  <div id="header">
    <div id="logo"><a href="../index.php"><img src="../images/logo.gif" width="156" height="148" border="0" alt="img" title="Logo"/></a></div>
    Great Linford
  <br />Primary School</div>
  <div id="motto"><div id="myarea"><a href="../html_files/student_area.html" >My Area</a></div>
  Be proud to do the "Right Thing"
    
  <a href="../html_files/student_area.html"><img src="../images/star.gif" width="89" height="89" border="0" alt="img"/></a></div>
 
  <div id="menu">
  <ul>
  <li><a href="../index.php" accesskey="1">Homepage</a></li> 
   <li><a href="../html_files/school_tour.html" accesskey="2">School Tour</a></li> 
   <li><a href="../html_files/calendar.php" accesskey="3">Calendar</a></li>
   <li><a href="../html_files/newsletter.php" accesskey="4">Newsletter</a></li>
   <li><a href="../html_files/events.html" accesskey="5">Events</a></li>
    <li><a href="../html_files/parents.html" accesskey="6">Parents</a></li>
   <li><a href="../html_files/staff.html" accesskey="7">Staff</a></li>
    <li><a href="../html_files/contact_us.html" accesskey="8">Contact Us</a></li></ul>
  </div>
  <div id="content"><!-- InstanceBeginEditable name="page_content" -->
  <?php
include_once('members_login_con.php');
$id = $_REQUEST['id'];
$pwd = md5($_REQUEST['pwd']);
if(preg_replace('/[a-zA-Z0-9]/', '', $id)){
    echo "Invalid entry"; echo "<br>";
    echo "<a href=\"members_login.php\"><br />Please try again</a>.";
    }
    else{
$check=mysql_query("SELECT * FROM users WHERE email = '".$id."' AND pwd = '".$pwd."'");
$row_num=mysql_num_rows($check);
 if($row_num < 1){
    echo "The user name and/or password has been entered incorrectly.";    
    echo "<br />";
    echo "<br />";
    echo "Please <a href=\"members_login.php\">Try again</a>.";
}else{
    $_SESSION['members'] = md5($_REQUEST['number']);
    $members = $_SESSION['members'];
    $_SESSION['id']=$id;
    $check = mysql_query("SELECT*FROM $table WHERE id= '".$id."' AND pwd = '".$pwd."'");
    $row_num = mysql_num_rows($check);
    if($row_num < 1){
        mysql_query("INSERT INTO $table (session,id,pwd) VALUES ('$members','$id','$pwd')");
        header('location:"members_area.php?sess='.$URLsession.'"');
    }else{
        echo "You are not authorised to log in concurrent sessions";
        echo "<br />";
        echo "<a href=\members_login.php\">Try again</a>";
    }
}
}
?>

Thanks and can't wait to hear back with responses. Been trying to fix it for days...
If any additional infomation is required I would be happy to provide it.
Louise

    I wanted to say that you must move the entire block of code above server-side the head tags.

  • PHP error: WARNING: cannot modify header information [...]


    Hello

    I just create a new page in dreamweaver (php server) to update a record, and the generated page gives the error:

    WARNING: Cannot modify header information - headers already [...]

    This happens after the update of the record, when it tries to access the page that I defined in the option "after updating, go to" Update Wizard. If looking at the code help, I put it in pastebinWeb site.

    Can you help me? Thanks in advance.

    Pedro

    PS - Yes, I'm a noob in PHP :-)

    ptknight wrote:
    > I don't see space before or after the php
    > tags. Is there anything else I should be looking? Would it be some parameters
    > or the fact that I write a text in PT (international characters)?

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    you use is not important. This is something that is sent to the browser
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    Also, you should put this right at the end of the page:

    This example gets around the problem of "headers already sent" by the buffering the
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    --
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    Author, "Foundation PHP for Dreamweaver 8" (friends of ED)
    http://foundationphp.com/

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