Is wrong have two statements like: <?php session_start(); ?>

[leonidassavvides]

Is wrong have two statements like:
<?php session_start(); ?>
in a document ?

34.<?php session_start(); ?>

the error below appears at
http://www.poliscarhire.com/administration/webmaster/contact-webmaster.php
has any to do with https:// ? No session var above line 34 ...


Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/p/o/l/polisch123/html/administration/webmaster/contact-webmaster.php:7) in /home/content/p/o/l/polisch123/html/administration/webmaster/contact-webmaster.php on line 34

[l_kris06]

From an output standpoint, its not wrong. Once the parsing starts and on the first encounter of session_start() in a script, the headers will be sent for that particular page(stand alone script), any further session_start() encounters will just be ignored and will result in a warning, and ideally this will have no effect on output.

You can use <?php error_reporting(0); ?> on ur script to hide these warnings/errors.

Best,
Kris

[JasonDFR]

I don't believe the errors you are getting are caused by having two session_start(); on your page. I believe that something must be getting sent to the user's browser prior to the first session_start(); call.

Remember, there can be nothing sent to the user prior to calling session_start(); Not even one space.

For example, the following put at the top of a file won't work


<?php session_start(); ?>

because there is a space in front of <?php .

You either have a space, tab, or some html being sent out prior to the first session_start();

I think.....

If you could post all the php code for that page, we could be sure.

Good Luck,

Jason

[l_kris06]

Hi JasonDFR,

I do not think having session_start(); anywhere even in the middle of a script with or without space will have the effect as what you have suggested. The following code will still print "Hello World".


<?php
error_reporting(1);

$_SESSION['msg'] = "Hello World";

session_start();

echo $_SESSION['msg'];
?>




@leonidassavvides,

I think its because of duplicate usage of session_start();


Rgds,
Kris

[JasonDFR]

White space or HTML code before the <?php tag will result in the error he is getting when you call session_start();

I was not referring to any whitespace inside the <?php block. That is why I said "sent to the user." I probably should have said browser.

Regarding calling session_start(); twice:

http://www.php.net/function.session-start

"As of now, calling session_start() while the session has already been started will result in an error of level E_NOTICE. Also, the second session start will simply be ignored."

His error is a warning, not E_NOTICE. His page has sent header information to the browser prior to calling the first session_start();

I am sticking to my previous diagnosis.

Maybe some of the more experienced guys will chime in here.

[JasonDFR]

Hi JasonDFR,

I do not think having session_start(); anywhere even in the middle of a script with or without space will have the effect as what you have suggested. The following code will still print "Hello World".


<?php
error_reporting(1);

$_SESSION['msg'] = "Hello World";

session_start();

echo $_SESSION['msg'];
?>





And by the way, your code above will not output "Hello World". The session has to be started before you set any session variables.

[l_kris06]

You are right, Thanks for pointing out.


<?php
session_start();
error_reporting(1);
$_SESSION['msg'] = "Hello World";
session_start();
echo $_SESSION['msg'];
?>



@leonidassavvides,

I think at line 34, u have used another session_start().
Can you post the code for "contact-webmaster.php".

Best,
Kris

[JasonDFR]

Yeah, post the php source for that page.

l_Kris,

Having two session_start(); will not result in the error he is getting. Have you visted his page and read the error at the top of it?

Most php configurations have level E_NOTICE messages turned off by default, thus putting two session_start(); in one page will not result in any error message being sent to the browser.

I am sure his error is not caused by two session_start(); calls. If I am wrong I'll definitely learn something new.

Post the code please.