Problem in Redirect To Another Page

jithu_php · **Problem in Redirect To Another Page -** 05-12-2008, 06:22 AM

i Have created a php file uploader page and i want redirect into the another page after the file uploder function..It was working fine to me but suddently a problem came to me that header already sent...
here am attaching my sample code ..plz give me a solution to overcome tis problem asps...
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<**** **********="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
</head>

<body>
<form name="form1" enctype="multipart/form-data" method="post" action="">
<table width="200" border="1" align="center" cellpadding="2" cellspacing="2" bordercolor="#0066CC">
<tr>
<td><table width="275" border="0" align="center" cellpadding="2" cellspacing="2">
<tr>
<td width="218" align="center" bgcolor="#F4F4F4"><div align="left">Attachment</div></td>
<td width="43" align="center"><input name="image" type="file" id="image"></td>
</tr>
<tr>
<td colspan="2"> </td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" name="Submit" value="Upload">
</td>
</tr>
<tr>
<td colspan="2" align="center" class="style1">
<?php
if($_REQUEST["Submit"] == "Upload")
{

if ($_FILES["image"]["error"] > 0)
{
echo "Return Code: " . $_FILES["image"]["error"] . "<br />";
}
else
{
if (file_exists("upload/" . $_FILES["image"]["name"]))
{
move_uploaded_file($_FILES["image"]["tmp_name"], "upload/" . $_FILES["image"]["name"]);
echo "Your File has been uploaded: " . "upload/" . $_FILES["image"]["name"];
echo $_FILES["image"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["image"]["tmp_name"], "upload/" . $_FILES["image"]["name"]);
echo "Your File has been uploaded: " . "upload/" . $_FILES["image"]["name"];
}
}

$img="upload/" . $_FILES['image']['name'];
header('location:salesenquiry.asp?a=$img');
exit;

}
?>
</td>
</tr>
<tr>
<td colspan="2" align="center"> </td>
</tr>
<tr>
<td colspan="2" align="center"><a href="javascript:;" class="style1" onClick="window.close();">[close window] </a></td>
</tr>
</table></td>
</tr>
</table>
</form>
</body>
</html>

plz give the answer asps.

the error msg to tis code is,,

Your file has been uploaded: API-CLEANING VALIDATION.pdf
Warning: Cannot modify header information - headers already sent by (output started at c:\Inetpub\vhosts\appleintlgroup.com\httpdocs\news upload.php:10) in c:\Inetpub\vhosts\appleintlgroup.com\httpdocs\news upload.php on line 49

nidash · 05-19-2008, 12:16 PM

If everything was working fine and suddenly you had this problem - like you say, and if the file was recently edited maybe a unwanted character is at the start of the php file?

Try this.

Open your page in 'edit' the old dos editor or something similar check if a nonprintable character is displayed - remove that hopefully it will work.

misterchucker · **Re: Problem in Redirect To Another Page -** 03-27-2009, 11:49 AM

The problem is that the headers were sent just before <!DOCTYPE (not because it is a doctype, but because it is the first bit of HMTL). The headers would also be sent if you called echo or print. The headers can only be sent once, so when you try to redefine them using header() later in your script, it results in an error.

The solution is to either place the php code containing header() before any HTML, or use output buffering (ob_start(), ob_end_flush(), etc.) to control when the headers are sent. You could use variables as an alternative to the output buffering functions.

In your case, the echo statements that come before header() will cause the same error, so either use output buffering or modify your control statements (if, else, etc.) so that echo will never happen before header().

After closer examination of your code, I'm a little confused about what you are trying to do by using header() to redirect to salesenquiry.asp. Based on the logic, this redirect will always happen when the form is submitted, regardless of whether there is an error with image file. In addition, an error or a confirmation will always be displayed when the form is submitted. So what does salesenquiry.asp do?