в 10:37, 26 мая 2010

2010-05-26T10:37:27Z

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2010-05-26T07:00:44Z

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==A Sample Interface==



<source lang="html4strict">

<?php
interface printable {
public function printme();
}
class Integer implements printable {
private $value;
public function getValue() {
return (int)$this->value;
}
public function printme() {
echo (int)$this->value;
}
}
?>

</source>

==Defining and Using an Interface==



<source lang="html4strict">

<?php
interface Serializable {
public function writeObject();
}
class Point implements Serializable {
public $x;
public $y;
public function writeObject() {
return serialize( $this );
}
}
class Item implements Serializable {
public function writeObject() {
return serialize( $this );
}
}
class Serializer {
private $sArray = array();
function register( Serializable $obj ) {
$this->sArray[] = $obj;
}
function output() {
foreach ( $this->sArray as $obj ) {
print $obj->writeObject()."\n";
}
}
}
$serializer = new Serializer();
$serializer->register( new Item() );
$serializer->register( new Point() );
print "<pre>";
$serializer->output();
print "</pre>";
?>

</source>

==Defining an interface==



<source lang="html4strict">

interface Nameable {
public function getName();
public function setName($name);
}
class Book implements Nameable {
private $name;
public function getName() {
return $this->name;
}

public function setName($name) {
return $this->name = $name;
}
}

</source>

==Different class implements one interface==



<source lang="html4strict">

<?php
class Person {
public $name;
function __construct( $name ) {
$this->name = name;
print "Person constructed with $name\n";
}
}
interface Command {
function execute();
}
class FtpCommand implements Command {
function setHost( $host ) {
print "FtpCommand::setHost(): $host\n";
}
function setUser( $user ) {
print "FtpCommand::setUser(): $user\n";
}
function execute() {
}
}
class PersonCommand implements Command {
function setPerson( Person $person ) {
print "PersonCommand::setPerson(): {$person->name}\n";
}

function execute() {
}
}
?>

</source>

==Implement an interface==



<source lang="html4strict">

<?php
interface Chargeable {
public function getPrice();
}
class Employee implements Chargeable {
protected $price;
public function getPrice() {
return $this->price;
}
}
$product = new Employee();
?>

</source>

==Implementing Multiple Interfaces==



<source lang="html4strict">

<?php
interface printable {
public function printme();
}
interface Inumber {
public function reset();
}
class Integer implements printable, Inumber {
private $value;
function __construct($value) {
$this->value = $value;
}
public function printme() {
echo (int)$this->value;
}
public function reset() {
$this->value = NULL;
}
}
function resetNumber(Inumber $obj) {
$obj->reset();
}
function printNumber(printable $obj) {
$obj->printme();
}
$inst = new Integer(10);
printNumber($inst);
resetNumber($inst);
?>

</source>

==Using Type Hinting with Interfaces==



<source lang="html4strict">

<?php
interface printable {
public function printme();
}
abstract class Number {
private $value;
abstract public function value();
public function reset() {
$this->value = NULL;
}
}
class Integer extends Number implements printable {
private $value;
function __construct($value) {
$this->value = $value;
}
public function getValue() {
return (int)$this->value;
}
public function printme() {
echo (int)$this->value;
}
}
function printNumber(printable $myObject) {
$myObject->printme();
}
$inst = new Integer(10);
printNumber($inst);
?>

</source>

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в 10:37, 26 мая 2010

Admin: 1 версия