Building a simple array - some help needed !

8,658

Expert Mod 8TB

If you want to go for some crazy stuff you can put your results into objects

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 // example using PDO

$array = $PDOstmt->fetchAll(PDO::FETCH_CLASS, 'your_class');

// or

$array = $PDOstmt->fetchAll(PDO::FETCH_CLASS | PDO::FETCH_PROPS_LATE, 'your_class');

the class methods are responsible for preparing the output, you just need to define the methods.

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 class your_class

{

    // properties according to the fieldnames
 
    function __construct($ini = "default")

    {

        // executed before or after creation (dep. on setting)

    }
 
    function __toString() // called by echo, print, ...

    {

        $str = "<a href='$this->link2'>$this->sc_name</a>"; // just an example

        return $str;

    }

}

and finally printing all out.

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 foreach ($array as $obj)

{

    echo $obj; // calling the __toString() method

}

this is a rather rough and short proposal, but it's not much code and lots of fun.

Jan 24 '09 #2

290

100+

Wow !! -
I don't do any php with objects and classes.

I haven't really got my head round it yet.

Actually - I dont even know what PDO is !
Is it short for something ?
Is fetchAll() a php cmd ?

I don't know if this is the time to start with objects and stuff
it looks like a completely different coding language !

Jan 24 '09 #3

8,658

Expert Mod 8TB

@jeddiki
time to get started

@jeddiki
PDO = PHP Data Objects, PHP: PDO - Manual
fetchAll() is one of PDO's methods to get the SQL results. (basicly, take all results and put them into an array)

@jeddiki
only at the beginning, the biggest problem is to understand how to use them.
introduction to objects: PHP: Classes and Objects (PHP 5) - Manual

Jan 24 '09 #4

290

100+

I suppose I had better search for a good beginners tute ?

Can you recommend any to get me started ?

Jan 24 '09 #5

8,658

Expert Mod 8TB

first, read a bit on PHP's website (see above).

right now I have no tutorial on my mind, but a very good source for any PHP programming is "PHP Power Programming" (PDF available for free, just google for it)

a good phrase for google searching is probably "OOP Tutorial"

regards

and of cause you can always ask us on bytes.com *g*

Jan 24 '09 #6

290

100+

Hi I have been trying out a bit of OOP !

This is what I wrote:

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<?php

class person {

  var $name;     

      public $height;

      protected $social_insurance;

      private $pinn_number;
 
  function __construct($persons_name) {

    $this->name = $persons_name;

  }
 
  function set_name($new_name) {  

   $this->name = $new_name;            

  }
 
    function set_pinn_number($new_pinn_number) {  

   $this->pinn_number = $new_pinn_number;            

  }
 
  function get_name() {

    return $this->name;

  }
 
    function get_pinn_number() {

     return $this->pinn_number;

  }     

} // end class
 
?>

and

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

<title>OOP in PHP</title>
 
<?php include("class_lib.php"); ?>
 
</head>

<body>
 
<?php

      $jimmy = new person;

      $jimmy->set_name("Nick Giggings");
 
            $number->set_pinn_number("345678");
 
      $stefan = new person("Stefan Mischook");
 
echo "Stefan's full name: " . $stefan->get_name()."<br>";

echo "Nick's full name: " . $jimmy->get_name();
 
echo "Tell me private stuff: " . $number->get_pinn_number;
 
echo "hello";

?>

 </body>

</html>

Now the problenm is that it doesn't out put anything and
dosn't give any error mesagges !

Thats not very user friendly !
How can I debug something ?

Jan 24 '09 #7

8,658

Expert Mod 8TB

@jeddiki
you probably have error messages turned off.

I've seen following: (all second code)

- line 13: missing parameter for constructor method
- line 16: object not defined
- line 23: call to undefined object, property not defined

and now the error messages I got (line numbers do not correspond)

Warning: Missing argument 1 for person::__construct(), called in /- on line 31 and defined in /- on line 9

Notice: Undefined variable: persons_name in /- on line 10

Notice: Undefined variable: number in /- on line 34

Fatal error: Call to a member function set_pinn_number() on a non-object in /- on line 34

Jan 25 '09 #8

290

100+

Yep,
You were right ;)

I am now displaying errors.

Jan 25 '09 #9

<Help> Simple Pause Needed.

8,658

Expert Mod 8TB

instead of

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 function get_pinn_number() {

      return $this->pinn_number;

}     

// and

echo "Tell me private stuff: " . $stefan->get_pinn_number();

better write

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 function get_pinn_number() {

      echo "Tell me private stuff: " . $this->pinn_number;

}     

// and

$stefan->get_pinn_number();

this is what using objects is about. (let the class do the hard work)

regards

Jan 25 '09 #10

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