Hey livelonger,
Well classes are used in a method of programming known as Object Oriented Programming, or OOP. OOP is a relatively new (i.e. past few years) concept that has been emerging as a great way to program. The point of OOP is to basically modularize your entire site. It makes code reusability easier and allows you to protect data. C++, Java, and PHP 5 are examples of languages that utilize OOP.
Entire books have been written on OOP because it's such a broad topic. All the questions you have would really require a lot of explanation to get across. I can highly recommend a book on PHP OOP though that may get you on your way. It's called Object Oriented PHP and can be found at:
http://www.amazon.com/Object-Oriented-PHP-...YDFEPH1XW9Y56P3Check your library for a copy.
You can also check out this website:
http://www.devarticles.com/c/a/PHP/Object-...ramming-in-PHP/I hope that all points you in the right direction. Take care.
I created this just recently....
//userobjects.php
<?php
class User {
var $username;
var $password;
var $email;
var $loginusername;
var $loginpassword;
function variables() {
$this -> username = mysql_real_escape_string(strlen(stripslashes($_POST['username'])));
$this -> password = mysql_real_escape_string(strlen(stripslashes($_POST['password'])));
$this -> email = mysql_real_escape_string(strlen(stripslashes($_POST['email'])));
$this -> loginusername = mysql_real_escape_string(stripslashes($_POST['usernamelogin']));
$this -> loginpassword = mysql_real_escape_string(stripslashes($_POST['passwordlogin']));
}
function checkregistration () {
if(!$this -> username || !$this -> password || !$this -> email)
{
print "You must fill in the required fields in order to sign up. <br><br>";
}
else if($this -> username > 8)
{
print "Your username must be less than 8 characters in length. <br><br>";
}
else if($this -> password < 6)
{
print "Your password must be at least over 6 characters long. <br><br>";
}
else
{
$this -> username = $_POST['username'];
$this -> password = $_POST['password'];
$this -> email = $_POST['email'];
$sql1 = "INSERT INTO Registered_users (Username, Password, Email) VALUES ('". $this -> username. "', '". $this -> password. "', '". $this -> email. "')";
$querysql1 = mysql_query($sql1);
if(!$querysql1)
{
print "Error: Cannot query user into database";
}
else
{
print "Thank you <b>". $this -> username. "</b> for signing up.<br><br>";
}
}
}
function login()
{
if(!$this -> loginusername || !$this -> loginpassword)
{
print "You must enter your username and password in order to login. <br><br>";
}
else
{
$loginusername = $this -> loginusername;
$loginpassword = $this -> loginpassword;
$sql2 = "SELECT * FROM Registered_users WHERE Username='$loginusername' and Password='$loginpassword'";
$querysql2 = mysql_query($sql2);
if(!$querysql2)
{
print "Error: Cannot query <b>". $this -> loginusername. "</b> from database.<br><br>";
}
else
{
$count = 0;
while($a = mysql_fetch_assoc($querysql2))
{
$count++;
}
if($count == 1)
{
$username1 = $this -> loginusername;
$_SESSION['loggedin'] == "$username1";
setcookie("asfasf", "asfasf", time()+200);
header("location: index.php");
}
else
{
$_SESSION['loggedin'] == "false";
header("location: http://www.google.com/");
}
}
}
}
}
?>
//index.php
<?php
require("connect.php");
include("userobjects.php");
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div id="header">
<?php
$new = new User;
$new -> variables();
$new -> login();
if($new -> login($_SESSION['loggedin'] == "false"))
{
?>
<div id="sub-header">
<?php
//
?>
<form action="index.php" name="login" id="login" method="post">
Username: <input type="text" name="usernamelogin" id="usernamelogin">
Password: <input type="text" name="passwordlogin" id="passwordlogin">
<input type="submit" name="loginuser" id="loginuser">
</form>
</div>
<?php
}
else
{
print "Welcome user";
}
?>
</div>
<div id="content">
<?php
$newuser = new User;
$newuser -> variables();
$newuser -> login();
if($newuser -> login($_SESSION['loggedin'] == "false"))
{
?>
<div id="registration">
<?php
$newuser -> checkregistration();
?>
<form action="index.php" name="registration1" id="registration1" method="post">
You must signup in order to view the contents of this site. <br><br>
Username: <input type="text" name="username" id="username">
Password: <input type="text" name="password" id="password">
Email: <input type="text" name="email" id="email">
<input type="submit" name="signup" id="signup">
</form>
</div>
<?php
}
else
{
print "Welcome user";
}
?>
</div>
</body>
</html>
Can you help me out here?
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