Session variables across multiple pages

[daverico]

Right i have a page with several if/else clauses, it's purpose is for users to login.

The only thing is i can't get the session variable on one page to transfer to the next! agh, melted.

Do i have to include any special info in a text link or something.... i don't know wots goin naff!

[anthill]

can you post some code? try a little example:

session.php

session_start(); 
$_SESSION['test']="woohoo"; 
header ("Location: receive.php"); 

receive.php

session_start(); 
echo $_SESSION['test']; 

like i say, post some code my friend

Ant

[Dedix]

You need to start the session on every pages by using session_start() at top of the code.

Hope it helps.

[daverico]

<?
session_start();

/* Start A Session */

	include "library/include/header.php" ;
	include "library/include/database.php" ;

	/* Include a header file and a database connections/functions file
	*/


if ( ( !isset ( $HTTP_COOKIE_VARS["username"] ) ) && ( !isset ( $proceed ) ) && ( !isset ( $submit ) ) ) {

	/* The Cookie is not set, so load the page as if it is the first time
	*/



	?>

	<form name="login" method="post" action="<? echo $PHP_SELF; ?>">
		<select name="staff">	
	<?	
		$query = " SELECT * FROM Staff ";
		$result = mysql_query($query) or die( mysql_error () );

		While( $row = mysql_fetch_array($result) ) {

		?>
  			<option value="<? echo $row["0"]; ?>"><? echo $row[1]; echo " ";  echo $row[2] ;?></option>
		<?
  		}
		?>
		</select>
		<input type="submit" name="proceed" value="proceed">
	</form>
<?
}





elseif( ( !isset ( $HTTP_COOKIE_VARS["username"] ) ) && ( !isset ( $submit ) ) && ( isset ( $proceed ) ) )  {
	/* The User is now attempting to register */
	?>

	<form name="register" method="post" action="<? echo $PHP_SELF; ?>">
		<?
		$staffid = $HTTP_POST_VARS["staff"];
		$query = " SELECT * FROM Staff WHERE StaffId = '$staffid'";
		$result = mysql_query($query) or die( mysql_error () );
		$row = mysql_fetch_array($result);


		$_SESSION["valid_user"] = $staffid;

		?>
		<table width="536" border="0">
			<tr>
 			 	<td width="274">Welcome <? echo $row["1"] ; ?></td>
  			 	<td width="252"><? echo $_SESSION["valid_user"]; ?></td>
			</tr>
			<tr>
 				<td>&nbsp;</td>
  				<td>&nbsp;</td>
			</tr>
			<tr>
  				<td height="30">What is your National Insurance Number</td>
 				<td><input name="ni1" type="text" size="2" maxlength="2">
    			<input name="ni2" type="text" size="2" maxlength="2">
   				<input name="ni3" type="text" size="2" maxlength="2">
   				<input name="ni4" type="text" size="2" maxlength="2">
   		 		<input name="ni5" type="text" size="1" maxlength="1"></td>
			</tr>
			<tr>
  				<td>Choose a password</td>
  				<td><input name="pass1" type="password" size="20"></td>
			</tr>
			<tr>
 				<td>Enter it again</td>
  				<td><input name="pass2" type="password" size="20" maxlength="20"></td>
			</tr>
			<tr>
				<td><input type="submit" name="submit" value="submit">
			</tr>
	 	</table>
	</form>

<?
}

elseif( ( !isset ( $HTTP_COOKIE_VARS["username"] ) ) && ( isset ( $submit ) ) ) {
	/* information for registration has been entered, lets check if it is valid */
	$staffid = $_SESSION["valid_user"];
	$ni = $HTTP_POST_VARS["ni1"] . $HTTP_POST_VARS["ni2"] . $HTTP_POST_VARS["ni3"] . $HTTP_POST_VARS["ni4"] . $HTTP_POST_VARS["ni5"] ;
	$query = " SELECT * FROM Staff WHERE StaffId = '$staffid'";
	$result = mysql_query($query) or die( mysql_error () );
	$row = mysql_fetch_array($result);

	var_dump($HTTP_SESSION_VARS["valid_user"]);
	var_dump($_SESSION["valid_user"]);
	echo $ni ;
	echo $staffid;   		
	if( $ni == $row["4"]){
		echo "ni check successful";
		if( $pass1 != $pass2 ){

			echo "Your Passwords are not the same" ;
		}	
		else{
			$query = "INSERT INTO Staff WHERE StaffId = '$staffid' password values ('$pass1')";

			if($result=mysql_query($query)){
				echo "your password has been set, Continue to the site"; 			
			}
		}
	}
}
	include "library/include/footer.php" ;
?>

[daverico]

the last section of code is where i require a value for the session variable "valid_user"

but when i call var_dump($_SESSION["valid_user"]) the result is null, same for $HTTP_SESSION_VARS

any ideas?

[dalecosp]

does

echo $staffid;

return a value...?

[daverico]

echo $staffid also returns nothing.

i'm at a loss

[Dedix]

I was in the same boat. So, i'll tell you how i fixed my problem. Maybe it will work for you too.

Try to set session.use_trans_sid to 1 and see what happens. If your script works in this way, you should check if your browser has cookies enabled and set the following settings in your php.ini (in case you're using windows) as the follows:

session.use_cookies = 1
session.cookie_path = /

Of course if you did then you could (i suggest you to do) turn back off session.use_trans_sid.

Hope it will help you!