Warning: Cannot modify header information - headers already sent

[tim101011]

I have a page on my website that deletes pictures a user has uploaded. I am getting this error:

 

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/propertyeagle.co.uk/httpdocs/processdeletepostings.php:20) in /var/www/vhosts/propertyeagle.co.uk/httpdocs/processdeletepostings.php on line 79

 

And the user is not being redirected to the next page after the deletion as coded

 

Here is the code:

 

 

<?php 

session_start();

//check the user logged in legitamatley if not redirect them to the login page

                      if ($_SESSION['$specialcode']!=session_id()){
                      header("location:logonpage.htm");}


//connect to the db

require_once ('./connecttodb.php');


//delete selected postings from db and check if anything was selected

$a=0;
if ($_POST['C1']!="") {
$id = $_POST['C1'];
$query= "DELETE from property where id= '$id'";
$result = @mysql_query ($query);
$a=1; echo $id;
deletepictures($id); 
}

        if ($_POST['C2']!="") {
$id = $_POST['C2'];
$query= "DELETE from property where id= '$id'";
$result = @mysql_query ($query);
$a=1;
deletepictures($id);
}


if ($_POST['C3']!="") {
$id = $_POST['C3'];
$query= "DELETE from property where id= '$id'";
$result = @mysql_query ($query);
$a=1;
deletepictures($id);
}


function deletepictures($id)

{

                     if (file_exists ("uploads/".$id."a.jpg")) {unlink ("uploads/".$id."a.jpg");} 
if (file_exists ("uploads/".$id."b.jpg")) {unlink ("uploads/".$id."b.jpg");} 
if (file_exists ("uploads/".$id."c.jpg")) {unlink ("uploads/".$id."c.jpg");} 
if (file_exists ("uploads/".$id."d.jpg")) {unlink ("uploads/".$id."d.jpg");} 
if (file_exists ("uploads/".$id."e.jpg")) {unlink ("uploads/".$id."e.jpg");} 

if (file_exists ("uploads/".$id."a.gif")) {unlink ("uploads/".$id."a.gif");} 
if (file_exists ("uploads/".$id."b.gif")) {unlink ("uploads/".$id."b.gif");} 
if (file_exists ("uploads/".$id."c.gif")) {unlink ("uploads/".$id."c.gif");} 
if (file_exists ("uploads/".$id."d.gif")) {unlink ("uploads/".$id."d.gif");} 
if (file_exists ("uploads/".$id."e.gif")) {unlink ("uploads/".$id."e.gif");} 


if (file_exists ("uploads/".$id."a.bmp")) {unlink ("uploads/".$id."a.bmp");} 
if (file_exists ("uploads/".$id."b.bmp")) {unlink ("uploads/".$id."b.bmp");} 
if (file_exists ("uploads/".$id."c.bmp")) {unlink ("uploads/".$id."c.bmp");} 
if (file_exists ("uploads/".$id."d.bmp")) {unlink ("uploads/".$id."d.bmp");} 
if (file_exists ("uploads/".$id."e.bmp")) {unlink ("uploads/".$id."e.bmp");} 

}






//check how many active postings the user has and store the value in the session
// variable used for navigation link activation/ deactivation

$userid = $_SESSION['user_id'];
$sql="SELECT * FROM property WHERE userid='$userid'";
$result=mysql_query($sql);
$count=mysql_num_rows($result);
$_SESSION['postings'] = $count;

//redirect to search page

if ($a==1){header("location:searchproperties.php?id=deletesuccesfull");}
else {header("location:deletepostings.php");}


?>

 

Any ideas? I have already positioned the "session_start();" statement at the very top.

 

Thankyou kindly

[trq]

Did you read the sticky at the top of this forum?

[tim101011]

Yes, from top to bottom  :-\

 

I am still non the wiser.

[trq]

Do you have any whitespace before your <?php tag? You do in your post.

[tim101011]

No, definitely not. Sorry, that's just the way i pasted the code into the post here