Error with session_start()

tickled_pink

I'm having the following error when using the session_start() function:

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/tourists/public_html/phpTourist/include/db.php:25) in /home/tourists/public_html/phpTourist/include/accesscontrol.php on line 7

This looks similar to the type of problem you have when you try using the 'header' function when you don't know what you're doing.😉

But this one's baffling me as nothing is output to the browser by db.php except when an error occurs. However, none of the functions (there's only one) in db.php are accessed prior to session_start() being invoked.

As a matter of fact, session_start() is the first part of the accesscontrol.php script to be run.

tickled_pink

Well, I've just scanned previous posts on this board and it seems that others have had similar problems. Some of the answers have been along the lines of what I was thinking of, but I can't see anywhere where there might be any output to the browser before session_start() is reached.

To clarify, the code (copied from a tutorial) is as follows. Maybe I mistyped something ...

db.php ...

<?php
	// db.php

//Database functions for easier site maintainance
//Set default developer access
$dbhost = "localhost";
$dbuser = "tourists_devuser";
$dbpass = "aaliyah";

//dbConnect: Connects to specified database.
//Param: Database Name (optional)
function dbConnect($db="") {
	//Import the scope of the globals so that they can be accessed from within the function
	global $dbhost, $dbuser, $dbpass;

	$dbcnx = @mysql_connect($dbhost, $dbuser, $dbpass)
			or die ("The site database appears to be down.");

	if ($db !="" and !@mysql_select_db($db))
		die ("The site database is unavailable");

	return $dbcnx;
}
?>

common.php ...

<?php
	// common.php

function error($msg) {
	?>
	<html>
	<head>
	<script language="javascript">
	<!--
		alert("<?=$msg?>");
		history.back();
	//-->
	</script>
	</head>
	<body>
	</body>
	</html>
	<?
	exit;
}
?>

The start of accesscontrol.php ...

<?php
	// accesscontrol.php
	include_once 'common.php';
	include_once 'db.php';

//Start the session
session_start();

planetsim

<?php
    // accesscontrol.php
    include_once 'common.php';
    include_once 'db.php';

//Start the session
session_start();

have error_reporting(E_ALL);
and have the session intiated first

so its

<?php
error_reporting(E_ALL);
 //Start the session
    session_start();

// accesscontrol.php
    include_once 'common.php';
    include_once 'db.php';