Functions

<?php

//function to get the date
function last_login()
{
    $date = gmdate("Y-m-d");
    return $date;
}

//function that sets the session variable
function sess_vars($base_dir, $server, $dbusername, $dbpassword, $db_name, $table_name, $user, $pass)
{


    //make connection to dbase
    $connection = @mysql_connect($server, $dbusername, $dbpassword)
                or die(mysql_error());

    $db = @mysql_select_db($db_name,$connection)
                or die(mysql_error());

    $sql = "SELECT * FROM $table_name WHERE username = '$user' and password = password('$pass')";

    $result = @mysql_query($sql, $connection) or die(mysql_error());


    //get the number of rows in the result set
    $num = mysql_num_rows($result);

    //set session variables if there is a match
    if ($num != 0)
    {
        while ($sql = mysql_fetch_object($result))
        {
            $_SESSION[first_name]   = $sql -> firstname;
            $_SESSION[last_name]    = $sql -> lastname;
            $_SESSION[user_name]    = $sql -> username;
            $_SESSION[password]     = $sql -> password;
            $_SESSION[group1]       = $sql -> group1;
            $_SESSION[group2]       = $sql -> group2;
            $_SESSION[group3]       = $sql -> group3;
            $_SESSION[pchange]      = $sql -> pchange;
            $_SESSION[email]        = $sql -> email;
            $_SESSION[redirect]     = $sql -> redirect;
            $_SESSION[verified]     = $sql -> verified;
            $_SESSION[last_login]   = $sql -> last_login;
        }
    }else{
        $_SESSION[redirect] = "$base_dir/errorlogin.html";
    }
}

//functions that will determine if access is allowed
function allow_access($group)
{
    if ($_SESSION[group1] == "$group" || $_SESSION[group2] == "$group" || $_SESSION[group3] == "$group" ||
        $_SESSION[group1] == "Administrators" || $_SESSION[group2] == "Administrators" || $_SESSION[group3] == "Administrators" ||
        $_SESSION[user_name] == "$group")
        {
            $allowed = "yes";
        }else{
            $allowed = "no";
        }
    return $allowed;
}

//function to check the length of the requested password
function password_check($min_pass, $max_pass, $pass)
{

    $valid = "yes";
    if ($min_pass > strlen($pass) || $max_pass < strlen($pass))
    {
        $valid = "no";
    }

    return $valid;
}

?>