This question already has an answer here:
Edit 4: Why this question is not a duplicate to the linked question
While the underlying problem turned out to be the same as in the linked question, I did not receive the error message Headers not send, so the answer, which I read, was not useful to me at this time. Thus, this question, while maybe overly long, has merit on it's own.
Original Post
Sorry to bother you, but after two days of research, I broke down. I'll try to give the maximum amount of information.
What I'm doing:
I am currently writing a login system, just for fun. Registering, entering data into the database, loging in works perfectly fine. I host with 1and1, my database is there as well.
Now to keep going, I wanted to start with sessions. Initially, all seemed well and simple.
session_start();
//returns true when put into an if()
$_SESSION['id'] = //user ID read from databse
echo $_SESSION['id']; //prints out the ID just fine.
When I go to another page, I instantly call session_start(); again. In fact, ALL my pages start with
include 'functions.php';
$con = startup();
//statup(); is in functions.php, connects to a databse,
//calls session_start(); succesfully, then returns the connection.
The problem should not be in the function, since it works fine, also I tried the connection/session starting thing to be in every file, rather than a shared function - didn't change anything.
But none of the session variables retain values.
Possible Problems
Cookies are not send
javascript:alert(document.cookie); in Firefox gives me
__qca=P0-1714752251-1385128732260
Chrome tells me no cookies are received, also none blocked.
Given that many people have the problem of cookies being unable to be send at the moment they call session_start(); because cookies have been send before, I assume I don't need to call anything regarding sending cookies in my code.
I don't know what to make of this.
My host doesn't allow sessions
Was another idea of mine. However, I can see my php_info(); and it tells me:
Session setting
Session Support enabled
session.cache_expire 180
session.cookie_domain no value
session.cookie_httponly Off
session.cookie_lifetime 0
session.cookie_path /
session.use_cookies On
session.use_only_cookies On
session.use_trans_sid 0
Those are just the lines which seem somewhat relevant to me.
So, what I read from that is that sessions should work just fine, with cookies and stuff. But I don't really understand this level either.
So, thats where I'm stuck. All the components of my code work fine, I'm quite sure the syntax is right, as far as I understand it the server supports sessions.
Oh, I've also tried changing the session path from /tmp to a directory right on my webspace - It didn't seem to do anything, no data was stored on my "part" of the server.
EDIT:
Using the new information about error_reporting(E_ALL); I now recieved the generic error message
Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /homepages/23/d315777983/htdocs/mtm/index.php:14) in /homepages/23/d315777983/htdocs/mtm/functions.php on line 9
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /homepages/23/d315777983/htdocs/mtm/index.php:14) in /homepages/23/d315777983/htdocs/mtm/functions.php on line 9
I guess I can start working with older suggested solutions now.
EDIT 2:
As suggested, I added print_r($_SESSION); after the include.
It just prints "Array()" (without quotation marks)
I also moved session_start back into each individual file, called BEFORE functions.php is included.
It says cookies are send at line 14 - which in my code is literally just
<?php
EDIT 3: Well, that was some wasted time. Removed whitespace at the end of functions.php, called startup(); before any html output and now it works perfectly.
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