Help in Step 13 of OOP - PHP Tutorial

[sectorclear01]

http://www.killerphp.com/tutorials/object-oriented-php/php-objects-page-3.php

 

Step 13:

 

Constructors

 

All objects can have a special built-in method called a 'constructor'. Constructors allow you to initialise your object's properties (translation: give your properties values,) when you instantiate (create) an object.

 

Note: If you create a __construct() function (it is your choice,) PHP will automatically call the __construct() method/function when you create an object from your class.

 

The 'construct' method starts with two underscores (__) and the word 'construct'.

 

<?php

class person {

var $name;

function __construct($persons_name) {

$this->name = $persons_name;

}

 

function set_name($new_name) {

$this->name = $new_name;

}

 

function get_name() {

return $this->name;

}

 

}

?>

 

 

My Note:

 

Sir/Madam, I didn't get the use of method __construct, but no problem with other methods there.

 

If possible, a sample of View Page that uses the __construct will be more clear.

 

Thank you for your response!

[falkencreative]

Take this example:

 

<?php 
class person {
var $name;
function __construct($persons_name) { 
$this->name = $persons_name; 
} 

function set_name($new_name) {
$this->name = $new_name;
} 

function get_name() { 
return $this->name; 
} 

} 
?> 

When the object is first created, with these lines:

 

$object = new person('Ben');

 

the constructor ("__construct()") is called automatically. It will take the text that you provided ("Ben"), and set the $name property (referred to as $this->name, since it's part of the object) to the string that you specified. A constructor is most often used to set up the properties that the object needs to function.

 

Hope that helps?