Question

I have the following code in a PHP file called via Ajax (note – the code is a stripepd down version of the actual code, but still produces an error:

<?php
    session_start();
    $response = array(
        'status'=>'abc',
        'a'=>'abc',
        'b'=>'abc',
        'c'=>'abc'
    );

    header('X-JSON: '.json_encode($response));
    exit;

?>

There are absolutely no spaces or anything before the opening

Yet when I call the script I get:

‘[11-Aug-2009 14:56:13] PHP Notice: A
session had already been started –
ignoring session_start() in
\test\action.php on line 2

[11-Aug-2009 14:56:13] PHP Warning:
Cannot modify header information –
headers already sent by (output
started at \test\action.php:2) in
\test\action.php on line 10′

Line 2 is the session_start() command and line 10 is the header() command.

So PHP is telling me that it has ignored the session_start, and then immediately telling me that actually that line produced output….whats going on?

Answer 1

Well, believe it or not, the criminal output is……

'[11-Aug-2009 14:56:13] PHP Notice: A session had already been started - ignoring session_start() in \test\action.php on line 2

Either suppress error messages (bad idea in development) Or find where you started the session (which is really how you need to solve this)