PHP - Classes

im currently doing a large php project and i am confident i can do it. Its a basic forum like phpbb or mybb where users can download the files and instal. however i have looked through their code and i see they use classes. I have never learned to do classes since i havent had to use them yet. should i be using them now for this project? do i need to? and if so then what are the benefits?

How can i get my class to be showed on the front page
here is the front page
<?php
require('ex2.php');
$start = new A();
$tart->Display();
?>
now here is ex2.php
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);

class A
{
    public $title = "test1";
    public $end = "test2";
}   
function __set($name, $value)
    {
        $this->$name = $value;
    }
function Display()
{
    echo $title;
    echo $end;
}

?>
shoudn't this print test1 and test2 ?

Take the following example:


<?php
class a {
var $things;
public function __construct($stuff) {
$this->things = $stuff;
}
}
class b {
var $morethings;
$this->morethings = "something";
}

$c = new a(new b);

echo $c->things->__PARENT__;
?>


The line "echo $c->things->__PARENT__;" (as you can probably imagine) does not work. How would I output what the 'b' object is stored in ('a')?

Hello,

maybe back to basics, but

  [PHP] pobierz, plaintext

Hi, I want to build a simple calculator class and one of the function is to calculate the factorial, but for some reason I cannot get this to work.

Here is class:
=========
Code: [Select]
<?php
class Calculator {

 function factorial($n) {
  if($n==1)
return 1;
  else 
return factorial($n-1)*$n;
 }
}//END CLASS Calculator

$calculator=new Calculator();
print $calculator->factorial(3);
?> 

But it doesn't work, I know this is simple but I am a little rusty with object oriented programming.

I'd appreciated any help!

Hi there,    This might a newbie question but I need help understanding PHP classes which am currently learning.    I have an index page.    With this three included files.    database.php config.php account.php    on database.php, the class is declared using $connection new Database(...), on this page is also all the coding for this class.   In config.php is a declared class of $account new Account($user_id);   and on account.php is all the details for the account class.    on the index.php is echo $account->sayHello;    However, My page is throwing out an error because I'm trying to use $connection->query(..) in my account.php / Account class.    I have tried to extend the Account class with Database but still have no luck.    How can I make sure the I can use a class function from another page in my Account class?        Thanks for reading

If I have defined an instance of a class in one script how do I then use this same instance and the same variable in other scripts?  For example say I have this code in a file called "index.php"


include("myclass.class.php");

$myclass = new myClass;

$myclass->$variable = "hello world";


However if I then have this code in a file called "page1.php" when I try to access the same variable it is empty. 


include("myclass.class.php");

echo($myclass->$variable)


How can I use the same instance of this class across all files keep the variable values the same?

Thanks for any help. 

I'm looking for suggestions / recommendations for php classes that interact with Skype.

It's a bit difficult to fully describe what I want to do, but think in terms of a internal customer support application leverages the functionality of Skype. We will need to do things like open Skype progamatically, monitor the elapse time and acquire that data for statistical analysis, things like that...

I know Skype has an API, so I'm thinking someone has probably already written some classes that work with it...   

Naturally, I'm trying to avoid "reinventing the wheel".

Anyone know about this sort of thing?

OK, im not too crash hot on classes, so hoping someone can help me with this error:
Quote

Fatal error: Call to a member function add_current_page() on a non-object in /path/to/includes/application_top.php on line 312


This is from an osCommerce application (I know someone will probably tell me to post in 3rd party scripts, but I am more interested in whats generally causing the error). The thing that confuses me is that application_top.php is only 236 lines long.

So I am trying to run my execute function from my database class from my email class. I have SMTP system to handle emails on the website. I am working on a function in the email class called addAccount. It is suppose to add a row in the database under the SMTP table. When I run the function, I get no parsing errors, so I add the or die to my query from the execute function, still nothing at all.
 So here is some code:

-The addAccount function from Email.php:

function addAccount($name, $email, $username, $password, $protocol, $port, $server){
//Error checking & cleaning vars. will be done in the application, not the backend.
if(!empty($name) && !empty($email) && !empty($username) && !empty($password) && !empty($proctocol) && !empty($port) && !empty($server)){
$name = ucwords(strtolower($name));
$email = strtolower($email);
$this->db->execute("INSERT INTO ".TBL_SMTP." (name, email, username, password, protocol, port, server) VALUES ('$name', $email', '$username', '$password' '$protocol', '$port', '$server')", true);
return true;
}else
return false;
}


-The entire email class from Email.php

<?php
require_once("pear/Mail.php");
class Email{
var $from_name, $from_email, $to_name, $to_email, $subject, $body, $host, $port, $username, $password;
private $db = NULL;
function __construct(Database $db){
$this->db = $db;
}
function dbEmail($id, $name, $email, $subject, $body){
$q = $this->db->select(TBL_SMTP, "*", "id='".$id."'");
if($q->numRows() > 0){
$f = $q->fetchRow();
$this->from_name = $f['name'];
$this->from_email = $f['email'];
$this->username = $f['username'];
$this->password = $f['password'];
$this->host = $f['protocol']."://".$f['server'];
$this->port = $f['port'];
$this->to_name = $name;
$this->to_email = $email;
$this->subject = $subject;
$this->body = $body;
return sendEmail();
}else
return false;
}
function sendEmail(){
$from = $this->from_name." <".$this->from_email.">";
$to = $this->to_name." <".$this->to_email.">";
$headers = array ('From' => $this->from,
      'To' => $this->to,
      'Subject' => $this->subject);   
  $smtp = Mail::factory('smtp',
  array ( 'host' => $this->host,
         'port' => $this->port,
     'auth' => true,
     'username' => $this->username,
     'password' => $this->password));
$mail = $smtp->send($to, $headers, $this->body);
if(PEAR::isError($mail)){
   //echo($mail->getMessage()); //For debugging purposes only
return false;
  }else
   return true;
}
function addAccount($name, $email, $username, $password, $protocol, $port, $server){
//Error checking & cleaning vars. will be done in the application, not the backend.
if(!empty($name) && !empty($email) && !empty($username) && !empty($password) && !empty($proctocol) && !empty($port) && !empty($server)){
$name = ucwords(strtolower($name));
$email = strtolower($email);
$this->db->execute("INSERT INTO ".TBL_SMTP." (name, email, username, password, protocol, port, server) VALUES ('$name', $email', '$username', '$password' '$protocol', '$port', '$server')", true);
return true;
}else
return false;
}
}
$email = new Email($db);
?>


The entire database class from Database.php

<?php
class Database{
var $mysqli, $result, $q, $affectedRows;
function __construct($host, $user, $pass, $db){
$this->mysqli = new MySQLi($host, $user, $pass, $db);
}
function execute($query, $error = false, $mode = MYSQLI_STORE_RESULT){
$this->q = $query;
if(!$error)
$result = $this->mysqli->query($query, $mode);
else
$result = $this->mysqli->query($query, $mode) or die($this->mysqli->error);

if(is_object($result) && $result instanceof MySQLi_Result){//if result is a object and is part of the mysqli class?
$this->result = $result;
$this->affectedRows = $this->result->num_rows;
}else
$this->affectedRows = $this->mysqli->affected_rows;
return $this;
}
function fetchRow($mode = MYSQLI_ASSOC){
return $this->result->fetch_assoc($mode);
}
function fetchAll($mode = MYSQLI_ASSOC){
$row = $this->result->fetch_all($mode);
return !empty($row) ? $row : array();//if not empty return row, else return an array?
}
function numRows(){
return $this->affectedRows;
}
function delete($table, $where){
return $this->execute("DELETE FROM ".$table." WHERE ".$where);
}
function deleteAll($table){
return $this->execute("TRUNCATE ".$table);
}
function update($table, $set, $where){
return $this->execute("UPDATE ".$table." SET ".$set." WHERE ".$where);
}
function select($table, $select = "*", $where = NULL){
if(is_null($where))
$where = "";
return $this->execute("SELECT ".$select." FROM ".$table." ".$where);
}
}
$db = new Database(DB_HOST, DB_USER, DB_PASS, DB_DB);
?>


Chances are it is my email class since it was 100% written by me. The database class I had some help from a member here.

What do you experts think?

I am working with the Zend Framework and I noticed that some of the classes do not have constructor. For instance, Zend_ACL does not have a constructor. What happens with this class is instantiated? Is it just a sort of empty object? The class does not extend another class so a parent constructor is not being called.

hello, all i am trying to learn php, and currently trying to get my head around using classes.

i have the following layout:

index.php
Code: [Select]
<?php 

include("config/autoloader.php");

$content = new content(); 
$content->get_content(); // loads Content! 
$content->edit_content(); // Edits Content!
?>
<?php
$navbars = new navbars();
$navbars->get_navbar1(); // loads navbar1!
?>

config/autoloader.php
Code: [Select]
<?php

function spl_register_autoload($content) { 
   include_once("classes/" . $content . ".php"); 
} 

function spl_register_autoload($navbars) { 
   include_once("classes/" . $navbars . ".php"); 
} 

?>
content.php (content class file)
Code: [Select]
<?php
class content {
    
   public function get_content() { 
      echo "Show me the content!"; 
   }
   
      public function edit_content() { 
      echo "Edit the content"; 
   } 
}

?>
navbars.php navbars class file
Code: [Select]
<?php
class navbars {
      public function get_navbar1() { 
      echo "Show me the navbar1!"; 
   }
}

?>

i keep getting the 500 - internal error on iis, but works on a single class file, as soon as i add more then one i get the error, can someone please help me and explain where i have gone wrong.

thanks, all.

Hi,

I am running a web server for which I place the php files in /var/www folder and they work fine from the browser.

Now, I wish to use SSH2 class that can be found at (http://phpseclib.sourceforge.net/documentation/net.html#net_ssh_ssh2). I have placed SSH2.php in the same folder (/var/www) but it doesn't work. I have also copied the file in /usr/share/php (which is the path returned by ini_get('include_path') command).

Where do I put my required file (SSH2.php) so that I can use it.

Thanks

Yo, everyone.

I got a problem with the class i wrote for my coding, I need to use the class for every data that will show up. for that i used a 'for' cycle, but it seems i get only the first one of the cycle right. well the problem seems that the class can only be included once and for the rest, I got a header problem.

Is there a way to actually use classes in a cycle? Thanks in Advance.