PHP - Error: Cannot Send Session Cache Limiter - Headers Already Sent

I am confused why I am getting the following error and was wondering if I could get a 2nd pair of eyes..
error:
[29-Jul-2010 20:58:01] PHP Warning:  session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cookie - headers already sent in /home/curren11/public_html/mysite***.com/file_monitor.php on line 2
[29-Jul-2010 20:58:01] PHP Warning:  session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent (output started at /home/curren11/public_html/mysite***.com/file_monitor.php:2) in /home/curren11/public_html/mysite***.com/file_monitor.php on line 2

Here is the code:
<?php
session_start();

$root_path = realpath(getcwd());
$error_monitor_file = $root_path.'/file_modify.txt';
$hour = date("H");
$today = date("m-d-Y");



     $myFile2 = "file_monitor.php.log";
     $fh3 = fopen($myFile2, 'a');
     $log_msg = "Last ran on: ".$today." at: ".$hour." \n";
     fwrite($fh3, $log_msg);
    

function scan_dir($path)
{
 $out = array();
 $files = opendir($path);

while ($f = readdir($files))
{
  $extension = substr($f,-3);
     
   if ($f=='.' or $f=='..' or $extension=='jpg' or $extension=='JPG' or $extension=='png' or $extension=='gif' or $f=='file_monitor.php' or $f=='file_modify.txt' or $f=='file_monitor.php.log' or $f =='error_log'  ) 
     {
   continue;
 }
 
  if (is_dir($path.'/'.$f))
    {
  $out = array_merge($out, scan_dir($path.'/'.$f));
} 
  //if  (((!is_dir($path.'/'.$f)) && ($f!='.' or $f!='..' or $extension!='jpg' or $extension!='JPG' or $extension!='png' or $extension!='gif'))
  else
  //  {
    $out[] = $path. '/'. $f;
//}
}

  $_SESSION['all_files'] = $out;
  
 return $out;
}

$a = scan_dir(getcwd());

$count_array = count($_SESSION['all_files']);
$loop_count=0;
while($loop_count < $count_array)
{
  // file in directory when was it last changed ?
  $filechange1 = date("m-d-Y-H", filemtime($_SESSION['all_files'][$loop_count]));
 
 // was it chnaged today and have I sent out an alert yet?
 if($filechange1 == $today."-".$hour) 
  {
$fh2 = fopen($error_monitor_file, 'a');
fwrite($fh2, "\n alert, file: ".$_SESSION['all_files'][$loop_count]." was changed today within the last hour ! \n");
    fclose($fh2);
  }
 $loop_count ++;
 // log file? was it changed this past hour?
 if (file_exists($error_monitor_file))
 {
   $filechange_log = date("m-d-Y-H", filemtime($error_monitor_file));
 
if ( ($loop_count == $count_array ) && ($filechange_log == $today."-".$hour ) )
{
        email();
     }
}
}

// function for email...
function email()
{
require_once ('class.phpmailer.php');

$mail = new PHPMailer();

$mail->IsSMTP();                                   // send via SMTP
$mail->Host     = "localhost"; // SMTP servers
$mail->SMTPAuth = true;     // turn on SMTP authentication
$mail->Username = "**c66@***ar.com";  // SMTP username
$mail->Password = "*****"; // SMTP password
$mail->From     = "***@***.com";
$mail->FromName = "Colonial Cottage File Changed";
$mail->AddAddress("email@*****.com"); 

$mail->WordWrap = 50;                              // set word wrap
//$mail->AddAttachment("/var/tmp/file.tar.gz");      // attachment
//$mail->AddAttachment("/tmp/image.jpg", "new.jpg"); 
$mail->IsHTML(true);                               // send as HTML

$mail->Subject  ="Unauthorized file changed today!";
$mail->Body     =  "" ;

$mail->AltBody  =  "This is the text-only body";

if(!$mail->Send())
   {
     exit();
   }
}

 if ((file_exists($error_monitor_file)) && $hour == "00")
 {
   unlink($error_monitor_file);
 }
 fclose($fh3);
 exit();
?>

Hi Guys   I have recently been looking into implementing browser caching after reading this: https://developers.g...ctices/caching    There are a few things in that google article that don't make much sense to me so I'm hoping someone can clarify.   Firstly Question   The document says:   " we recommend that you configure your web server to explicitly set caching headers and apply them to all cacheable static resources"   This implies you can set caching headers for just some resources. How would you do this? Lets assume I only wanted to set caching headers for a file styles.css - would I need to output headers within the CSS file and then change the extension to .php? e.g.

<link rel="stylesheet" href="styles.php"/>

Second question   Etags have me very confused. How would you set etag headers for specific files and then generally? And if you set the etag in the header of the main php page does that mean everything gets cached?     Any help someone can provide would be very, very welcome!   Drongo

Quick question for you guys.

I am collecting payment data for a product.

Is it possible to send data from my form via http directly into another payment form via the post http headers?

So say if i had all the details payment info and address info and i matched my form exactly to theirs. Is it possible to write a php script to send the data from my form directly to another websites form to make an order, say amazon or a big site like this?

?first_name=samuel&last_name=east&action=Submit

Any Help?

Thanks

Hi Chaps,

I'm working on a PHP script to mysqldump database to file.

Using this as a base: http://www.edmondscommerce.co.uk/mysql/php-mysql-dump-script/, I've managed to strip it down to this:
Code: [Select]
set_time_limit(0);

$mysql_host='localhost';
$mysql_database='database';
$mysql_username='username';
$mysql_password='pasword';

_mysql_test($mysql_host,$mysql_database, $mysql_username, $mysql_password);
$print_form = 0;

header('Content-type: text/plain');
header('Content-Disposition: attachment; filename="'.$mysql_database."_".date('Y-m-d').'.sql"');

$filename = $mysql_database."_".date('Y-m-d').'.sql';
_mysqldump($mysql_database);

function _mysqldump($mysql_database)
{
$sql="show tables;";
$result= mysql_query($sql);
if( $result)
{
while( $row= mysql_fetch_row($result))
{
_mysqldump_table_structure($row[0]);
_mysqldump_table_data($row[0]);
}
}
else
{
echo "/* no tables in $mysql_database */\n";
}
mysql_free_result($result);
}
function _mysqldump_table_structure($table)
{
echo "/* Table structure for table `$table` */\n";
echo "DROP TABLE IF EXISTS `$table`;\n\n";
$sql="show create table `$table`; ";
$result=mysql_query($sql);
if( $result)
{
if($row= mysql_fetch_assoc($result))
{
echo $row['Create Table'].";\n\n";
}
}
mysql_free_result($result);
}
function _mysqldump_table_data($table)
{
$sql="select * from `$table`;";
$result=mysql_query($sql);
if( $result)
{
$num_rows= mysql_num_rows($result);
$num_fields= mysql_num_fields($result);
if( $num_rows> 0)
{
echo "/* dumping data for table `$table` */\n";
$field_type=array();
$i=0;
while( $i <$num_fields)
{
$meta= mysql_fetch_field($result, $i);
array_push($field_type, $meta->type);
$i++;
}
echo "insert into `$table` values\n";
$index=0;
while( $row= mysql_fetch_row($result))
{
echo "(";
for( $i=0; $i <$num_fields; $i++)
{
if( is_null( $row[$i]))
echo "null";
else
{
switch( $field_type[$i])
{
case 'int':
echo $row[$i];
break;
case 'string':
case 'blob' :
default:
echo "'".mysql_real_escape_string($row[$i])."'";
}
}
if( $i <$num_fields-1)
echo ",";
}
echo ")";
if( $index <$num_rows-1)
echo ",";
else
echo ";";
echo "\n";
$index++;
}
}
}
mysql_free_result($result);
echo "\n";
}
function _mysql_test($mysql_host,$mysql_database, $mysql_username, $mysql_password)
{
global $output_messages;
$link = mysql_connect($mysql_host, $mysql_username, $mysql_password);
if (!$link)
{
   array_push($output_messages, 'Could not connect: ' . mysql_error());
}
else
{
array_push ($output_messages,"Connected with MySQL server:$mysql_username@$mysql_host successfully");
$db_selected = mysql_select_db($mysql_database, $link);
if (!$db_selected)
{
array_push ($output_messages,'Can\'t use $mysql_database : ' . mysql_error());
}
else
array_push ($output_messages,"Connected with MySQL database:$mysql_database successfully");
}
}
The problem is, I want the file to save to a specific network location, rather than the output being sent to headers.

I've tried to play around with:
Code: [Select]
ob_start();....
$page = ob_get_contents();
ob_end_flush();
$fp = fopen("output.html","w");
fwrite($fp,$page);
fclose($fp);
But this outputs to the browser, then saves the file...I would like to load the page, and have the script create and save the file where I want it (without the output in the browser, or prompt to save/download file).

Note: I need something like this as I'm running PHP/MySQL on IIS, so can use shell/system/etc.

Any help will be hi-5-tastic!

How do I send multiple headers with this code?

Code: [Select]

<?php

$postdata = http_build_query(
    array(
        'var1' => 'some content',
        'var2' => 'doh'
    )
);

$opts = array('http' =>
    array(
        'method'  => 'POST',
        'header'  => 'Content-type: application/x-www-form-urlencoded',
        'content' => $postdata
    )
);

$context  = stream_context_create($opts);

$result = file_get_contents('http://example.com/submit.php', false, $context);

?>



*this header:

Code: [Select]
User-Agent: Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16

Simple question. How do I redirect the header location on a session page.  I thought I could go a different direction, but now I'm back to this one.
I tried just adding header("Location: newpage.php") at the end of a query insert, but it gave me the warning that it can't modify the head. But I need the page to redirect after the query is done.

Thoughts?

I'm trying to start a session in a simple php file.
I keep getting "Cannot send session cache limiter - headers already sent "

Here's *all* the code:
<?php session_start(); ?>
<html>
<body>
Testing
</body>
</html>

 

Here's the URL:
http://sizzelicks.com/Test2.php

Hi when I am using the following code


line 45: setcookie("username", $user, $Day);

line 48: setcookie("games", $cookiename, $Day);   



I am getting an error like this

Warning: Cannot modify header information - headers already sent by (output started at /export/home/ua/games/gamescripts/login_backend.php:7) in /export/home/ua/games/gamescripts/login_backend.php on line 45

Warning: Cannot modify header information - headers already sent by (output started at /export/home/ua/games/gamescripts/login_backend.php:7) in /export/home/ua/games/gamescripts/login_backend.php on line 48


can anyone please help me out. Thanks in advance

Hi Guys,

How can I send a session array through the URL and then use the values on the other page to create an SQL query?

Any Ideas?

Thanks in advance.

Ed

Hi, I am just recently getting this error message:Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/XXX/chordsandguitar.com/index.php:46) in /home/jchords/chordsandguitar.com/index.php on line 48

this is no doubt related to the fact that my site has been hacked along with 1000's of others that are on dreamhost. I don't know if it's related to php file permissions some of my files may have had had their permission set for read-write when they should not have been. They have all been changed to the more restrictive 755 or 644.

So here is how I am using the session_start to store some variables:

Code: [Select]

session_start();

if (!isset($_SESSION["count"]))
{
$_SESSION["count"]=0;
}
else
$_SESSION["count"]++;

if ($_SESSION["count"] == 0)
{
$scale_menu = 'C';
$variation_menu = 'maj';
$code_id = '1';
}
else
{
//allows retreiving the value of the drop-downs after the Select button has been pushed
// has to be skipped on the first access or overwrites starting vars. to null
if (isset($_GET['s_menu']))
$scale_menu = $_GET['s_menu'];
else
$scale_menu = $_GET['scale_menu'];
}


So any ideas why I am getting this error?

Thanks,

Jacques

the following isnt sending mail()
Code: [Select]
$to=$_POST['CustomerEmail'];
$from = "s@xaa.com";
$Cc = "s@xaa.com";
$headers = "From:" . $from;
$headers = "Cc:" . $Cc;
// To send HTML mail, the Content-type header must be set
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";
i believe it's the dot before the equal sign

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/bakerde1/public_html/oceangamer.com/login.php:1) in /home/bakerde1/public_html/oceangamer.com/login.php on line 2

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/bakerde1/public_html/oceangamer.com/login.php:1) in /home/bakerde1/public_html/oceangamer.com/login.php on line 2

These are my error messages, here is my code. I don't know if it is the UTF-8 code at the start, but if it is can anyone recommend a binary editor to remove this. If it isn't what is the problem?

<?php  
  session_start();



$username = $_POST['username'];
$password = base64_decode($_POST['password']);


$errors = array();

if($username == 'User Name' || $username == ''){
  $errors[] = 'Please enter a valid username';
}

if($password == 'Password' || $password == ''){
  $errors[] = 'Please enter a valid password';
}

$link = mysql_connect("localhost","*****","******") or die ("Could not connect!");
mysql_select_db("chef");

$query = mysql_query("SELECT * FROM `users` WHERE `username`='$username'");
$numrows = mysql_num_rows($query);

if ($numrows!=0)
{
while($row = mysql_fetch_assoc($query))
{
$dbusername = $row['username'];
$dbpassword = $row['password'];
}
if ($username==$dbusername&&$password==$dbpassword)
{ 
$_SESSION['user'] = $username;
while ($row = mysql_fetch_array($res)) {
   $type = $row['Type'];
}
if ($type == "0") {
header("location: chefpanel.php");
}else{
header("location: restpanel.php");
}
}
else
 $errors[] = 'Username or Password Incorrect';
}
else
 $errors[] = 'Username or Password Incorrect';
?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>

Hi Everyone

I am having a few issues with my website. I have developed in on my xampp local host and it works ok but when I upload the files and try to renew a membership using stripe I get the following messages.

Warning: session_start(): Cannot start session when headers already sent in /customers/a/d/f/mywebsite.co.uk/httpd.www/mywebsite/inc/settings.php on line 2 

Warning: Cannot modify header information - headers already sent by (output started at /customers/a/d/f/mywebsite.co.uk/httpd.www/mywebsite/procedures/payments/charge.php:1) in /customers/a/d/f/mywebsite.co.uk/httpd.www/mywebsite/procedures/payments/charge.php on line 141

I have some includes that appear on every page. This is the bootstrap.php file. This file holds the settings.php which connects to my database and other function files.

In this settings page I call the session_start() php function and then connect to my database.

I call the bootstrap.php file on every page to there for call the session_start() on every page.

I am using sessions alot so is this the right thing to do?

I have attached the renew_membership payment page which holds the form. The user fills out the payment page and the form data gets sent to a script called charge.php which uses the stripe objects to make the payment. I then want to do a redirect to the paymentSuccess.php page to output to the user that the payment was made successfully. This is where the issues arrise. I have split the charge file into 3 screen shots so it is more readable.

Hope someone can help me.

Thanks a lot

David

 

 

 

 

 

 

 

 

 

 

 

 

Edited April 26 by Irish_Dave

I am getting this error when I use this Code: [Select]
header("Location: /"); to redirect to home page.I believe  there is a javascript alert which come before this is called, that gives the below error, I cannot remove the alert so is there nay other way I can go about redirecting without giving me the below error ?



Code: [Select]

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/dsdsd/application/core/MY_Controller.php:dsdsds)

Solution: Turns out the headers will not send unless all of the other code is behind an else userinfo.php?user=MikeH, possible addition to the sticked post?


So strictly speaking I dont have a header error because my script does not produce errors. However my script should be redirecting me to "notes.php?error=ad" but instead it just sends me back to the page I was previously at. My script is made to process a download via "tokens" and then redirect the user. That all works fine but what I am trying to do now is check if the user has already about the download and if they have redirect them to the error page letting them know. So in short the URL goes like this:

notes.php?viewn=2 -> purchase.php?user=MikeH&nid=2 (unseen page all processing) -> notes.php?error=ad

however what it is doing is:

notes.php?viewn=2 -> purchase.php?user=MikeH&nid=2 (unseen page all processing) -> notes.php?viewn=2

Here is the notes code:

<?php
}else if (isset($_GET['viewn'])){
$cid = $_GET['viewn'];
$query = "SELECT * FROM approvednotes WHERE cid =".$cid;
$res = mysql_query($query) or die (mysql_error());
$i=0;
$r=1;
?>
<h2>Programs:</h2>
<table summary="Summary Here" cellpadding="0" cellspacing="0">
<tr>
  <td><b>File Name</b></td>
  <td><b>Author</b></td>
  <td><b>Cost</b></td>
  <td><b>Buy</b></td>
</tr>
<?php
echo "<tbody>";
echo "<tr class= \"dark\">";
while ($row = mysql_fetch_array($res)){


if($i == 1){
echo "</tr>";
$r++;
if($r% 1 == 0){
echo "<tr class = \"light\">";

$i=0;
$r = 0;


}else{
echo "<tr class = \"dark\">";
$i=0;
}



}
echo "<td> ". $row['name']."</td><td>".$row['username']."</td><td>".$row['value']."&nbsp;<img src=\"images/money.png \" height=\"30px\" /></td><td><a href=\"purchase.php?user=".$session->username."&nid=".$row['id']."\"><img src=\"images/buy.png\" height=\"30px\"/></a></td>";
$i++;


}

echo "</table>";


}?>


Here is the purchase code:


<?php
include("include/session.php");

if($session->checkLogin()){


$user= $_GET['user'];

if ($user == $session->username){
$note = $_GET['nid'];

$query3 = "SELECT * FROM users_downloaded WHERE nid=$note AND username='$user'";
$res3 = mysql_query($query3) or die (mysql_error());
$pass = mysql_num_rows($res3);

if ($pass != 0){
header("Location: notess.php?error=ad");

}



$nquery = "SELECT * FROM approvednotes WHERE id= ".$note;
$nres = mysql_query($nquery) or die (mysql_error());
//Get info about the file 
while ($nrow = mysql_fetch_assoc($nres)){
$price = $nrow['value'] ;
$location = $nrow['location'];
}
//see if user even has enough credits for this

   function creditcheck($username){
   $usern= $_GET['user'];
   
   $query = "SELECT * FROM users WHERE username = '".$usern."'";

$res = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($res)){
$credits = $row['credits'];
}
return $credits;
   }

$credits = creditcheck($user);
if($credits >= $price){
//user has enough credits to purchase note.
$newamount = $credits - $price;
$person = $session->username;
$query = "UPDATE users SET credits =".$newamount." WHERE username='$person'";
$res = mysql_query($query) or die (mysql_error());

$query2 = "INSERT INTO users_downloaded (nid, username) VALUES ('$note','$person')";
$res2 = mysql_query($query2) or die (mysql_error());

header("Location: download.php?f=".$location);
exit;



}else{
//error not enough money!!
header("Location: notes.php?error=ne");

}
}

}else{
header ("Location: notes.php?error=nl");
}






?>