function syntax please help - noobie

[Kent]

I am new to this language (well all, except english). I would like to create a simple function (if thats right) for a security feature on a page. I give you the code first and then what I want to implement

The code i am struggling with (level.php):
[code]
$level = create_function($a,'0'){
    if ($a => $_SESSION['levelID'];){
        // level check OK
        // continue
    }elseif{
        header("Location: /login.php");
        exit();
        // cut script here and send to login
    }
}
[/code]

What I want it to do:
[code]
<?
session_start();
include ("level.php");
level(2,$_SESSION[levelID]);
?>
[/code]

I hope you can figure out my mess. Basically if the $_SESION[levelID] does not match the variable set (ie. '2' in this example) then direct the user to the login page.

My Code editor (Rapid PHP) is complaining about a Syntax error '{' on the $level, line. I dont understand function creation as well.

Thankyou

[.josh]

[code]
<?php
  //example of a function where you don't need anything returned
  function echoIt ($value) {
      echo "$value";
  }
 
  // example of a function that returns something
  function makeBold($value) {
      $value = "<b>$value</b>";
      return $value;
  }

  /* example for using these functions */
  // will call the echoIt function and the echoIt function will
  // echo out 'hello how are you?'
  echoIt("hello how are you?");

  // this will make a variable called $message will contain
  // '<b>hello how are you?</b>'
  $message = makeBold("hello how are you?");

  // calling echoIt with the $message will now echo a bold version of the string. 
  echoIt($message);
?>[/code]

[Kent]

Thankyou for that,

I found out what was wrong and now have a working script.

Here:
[code]
// check for Access Level via Session Variable
// 0=Guest, 1=Member, 2=Moderator, 3=Administrator etc..
function level($a){
    $b = $_SESSION[leveID];// this is set when logged in
  if ($a <= $b) {
    // do nothing and allow the script to continue
  }else{
    // send the script to the login page
    header("Location: /login.php");
    exit();// kill the process here
  }
}

//Set access level of page at top of page
level(2)
[/code]

Thanks again

/////////////////////////////
To the post below....

You are right, I changed it. (new u c) Thanks

[kenrbnsn]

Why have the null action? Check for what you want, not what you don't want.

[code]<?php
// check for Access Level via Session Variable
// 0=Guest, 1=Member, 2=Moderator, 3=Administrator etc..
function level($a){
    $b = $_SESSION[leveID];// this is set when logged in
  if ($a > $b){
    // send the script to the login page
    header("Location: /login.php");
    exit();// kill the process here
  }
}

//Set access level of page at top of page
level(2);
?>[/code]

Ken