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OOPS in php programming

Object oriented php development.

Inhertance, Abstraction, Encapsulation, functiona overloading in php.
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  Also read
Basic php | Oops in php | Php custom object | Php API | Php Webservice
Php is a complete object oriented programming language. Now lets look how we can make object oriented php design

How to use/make class in php
Class design in php
<?php
1:
2:/**
3:Created by Arindam Chakraborty on 2nd Oct. 2009
4:
5:**/
6:
7:
8:class car {
9:
10: // explicitly adding class properties are optional - but is good practice
11: var $name;
12:
13: function __construct($car_name) {
14:
15: $this->name = $car_name;
16: }
17:
18:
19: public function get_name() {
20:
21: return $this->name;
22:
23: }
24:
25:
26: protected function set_name($new_name) {
27:
28: if (name != "Honda Civic") {
29: $this->name = strtoupper($new_name);
30: }
31:
32: }
33:
34:
35:}
36:
37:// 'extends' is the keyword that enables inheritance
38:class honda extends car {
39:
40:
41: protected function set_name($new_name) {
42:
43: if ($new_name == "Honda City") {
44: $this->name = $new_name;
45: }
46: else if($new_name == "Honda Civic") {
47: parent::set_name($new_name);
48: }
49:
50: }
51:
52: function __construct($car_name) {
53:
54: $this->set_name($car_name);
55: }
56:
57:
58:
59:}
60:
61:
62:
63:?>
64:
How to make inheritance in php
Inheritance in php
class car {
1:
2:}
3:
4:class maruti extends car {
5:
6:}
7:
8:So here 'extends' is the keyword that enables inheritance in php.
9:
How to make a new class object in php ?
How to create new object in php
1:// i am a creating a new car object
2:$objCar = new car("Stefan Mischook");
3:
4:// calling a function of that $objCar
5:echo "Calling a function" . $stefan->get_name();
6:
Abstract class in php
Abstract class in php
<?php
1:abstract class AbstractClass
2:{
3: // Force Extending class to define this method
4: abstract protected function getValue();
5: abstract protected function prefixValue($prefix);
6:
7: // Common method
8: public function printOut() {
9: print $this->getValue() . "\n";
10: }
11:}
12:
13:class ConcreteClass1 extends AbstractClass
14:{
15: protected function getValue() {
16: return "ConcreteClass1";
17: }
18:
19: public function prefixValue($prefix) {
20: return "{$prefix}ConcreteClass1";
21: }
22:}
23:
24:class ConcreteClass2 extends AbstractClass
25:{
26: public function getValue() {
27: return "ConcreteClass2";
28: }
29:
30: public function prefixValue($prefix) {
31: return "{$prefix}ConcreteClass2";
32: }
33:}
34:
35:$class1 = new ConcreteClass1;
36:$class1->printOut();
37:echo $class1->prefixValue('FOO_') ."\n";
38:
39:$class2 = new ConcreteClass2;
40:$class2->printOut();
41:echo $class2->prefixValue('FOO_') ."\n";
42:?>
43:
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