Advance-PHP-Tutorials

Advance   PHP    Tutorials:

Class example:

<?php

class books

{

var $bookname;

var  $price;

function display($name,$cost)

{

echo $this->bookname=$name;

echo '<br>';

echo $this->price=$cost;

echo '<br>';

}

}

$obj=new books();

$obj->display("om",10);

?>

Output:

om
10

Constructor & Destructor in php:

<?php

class  example

{

function  __construct()

{

echo "constructor is called & object  is created";

}

function __destruct()

{

echo "destructor is called & object is free";

}

}

$obj=new  example();

?>

Output:

constructor is called & object is created
destructor is called & object is free

Inheritance in php:

<?php

class  parent1

{

var $name="test";

var $phone="123456";

public function disp()

{

echo $this->name;

echo "<br>";

echo $this->phone;

echo “<br>”;

}

}

class  inheritance1 extends parent1

{

function read()

{

echo "it is working fine";

}

}

$obj=new inheritance1();

$obj->disp();

$obj->read();

?>

Output:

test
123456
it is working fine

interface in php:

<?php

interface  test

{

function disp();

}

class  hello implements test

{

function disp()

{

echo "it is interface function";

}

}

$obj=new  hello();

$obj->disp();

?>

Output:

it is interface function

Static variable & static member function in php:

<?php

class staticexample

{

public static $name="om"; // static variable

public static function disp()  //static member function

{

echo "static member function is this";

}

}

$obj=new  staticexample();

print  staticexample::$name;    // accessing static variable

echo "<br>";

staticexample::disp();        //accessing static member function

?>

Output:

om
static member function is this

Auto load  keywords in php:

First write code for  interface1.php file:

<?php

interface  test

{

function disp();

}

class  interface1  implements test

{

function disp()

{

echo "it is interface function";

}

}

$obj=new  interface1();

$obj->disp();

?>

Output:

it is interface function

And write code for  inheritance1.php file:

<?php

class  parent1

{

var $name="test";

var $phone="123456";

public function disp()

{

echo $this->name;

echo "<br>";

echo $this->phone;

}

}

class  inheritance1 extends parent1

{

function read()

{

echo "it is working fine";

}

}

$obj=new inheritance1();

$obj->disp();

$obj->read();

?>

Output:

test
123456it is working fine

And finally use  following  code autoload these two  files :

<?php

function __autoload($class_name)

{

    include $class_name . '.php';

}

$obj  = new inheritance1();

$obj2 = new interface1();

?>

Output:

(note: It will display boths files output together…)

test
123456it is working fine it is interface function