Posted by Rory Walsh on 03/02/05 21:18

Hi everyone, I am trying to work with the idea of sessions in PHP.
Basically I have a self-processing script called index.php but somehow I
keep losing my session variable, it works the first time around but when
I call it the second time around its gone? I do not reset the variable
or destroy the session are there any other reasons why this might occur?
The basic layout of the script is this(note this is not the full script,
I've just posted the relevant code and left out the other stuff.)

<?php
if($_POST["username"]=="rory"){//if user logs in as rory start session
session_start();
header("Cache-control: private");
$_SESSION['loggedin'] = "yes";
}

/*It enters the first time but when I call the script again from the
form below this one the session variable is empty?*/
if(strlen($_SESSION['loggedin'])>2){

if($_POST["verify"]=="yes"){
die("test");
$CONTENT .= "<font color = \"red\">Your changes have been
made.</font><br>";
}
$CONTENT = "You are currently logged in as ".$_POST["username"].
"<form action=\"index.php\" method=\"POST\">
<input type=\"submit\" value=\"Log out\" />
<input type=\"hidden\" name=\"logout\" value=\"yes\"/></form>
<hr>If you would like to change the text on the main page please click here
<a href=\"index.php?page=$PAGE_TITLE&action=edit\"><font
color=\"blue\">Edit intro page</a><font color =\"#136863\"><hr><h3>File
Upload.</h1><hr> Any files will appear in the 'students' page of the
website. Files that uploaded here are not availablre to the public and
can only be acccessed by students who have logged in. Because of
security issues only well know file types such as word, acrobat and text
files are legible for upload.
<form enctype=\"multipart/form-data\" action=\"index.php\" method=\"POST\">
<!-- MAX_FILE_SIZE must precede the file input field -->
<input type=\"hidden\" name=\"MAX_FILE_SIZE\" value=\"30000\" />
<!-- Name of input element determines name in $_FILES array -->
Send this file: <input name=\"userfile\" type=\"file\" />
<input type=\"submit\" value=\"Upload\" />
<input type=\"hidden\" name=\"arg1\" value=\"yes\">
</form>";
}


if ($action == "edit")
/*when user submits this is should call teh
script again and enter the test above but it doesn't?*/
{
$CONTENT =
"<form method=\"post\" action=\"index.php\">
<textarea name=\"content\" cols=\"60\" rows=\"20\">$CONTENT</textarea>
<input type=\"hidden\" name=\"page\" value=\"$PAGE_TITLE\" /><br/>
<input type=\"submit\" value=\"$DONE_BUTTON\" />
<input type=\"hidden\" name=\"verify\" value=\"yes\"/></form>";
}


Cheers,
Rory.

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