в 10:37, 26 мая 2010

2010-05-26T10:37:27Z

Admin: 1 версия

2010-05-26T07:00:42Z

1 версия

Новая страница

==Access private properties with for each loop==



<source lang="html4strict">

<?
class Person {
public $FirstName = "B";
public $MiddleName = "T";
public $LastName = "M";
private $Password = "asdfasdf";
public $Age = 29;
public $HomeTown = "LA";
public $FavouriteColor = "Purple";
public function outputVars( ) {
foreach($this as $var => $value) {
echo "$var is $value\n";
}
}
}
$bill = new Person( );
$bill->outputVars( );
?>

</source>

==Changing the member $a to protected or private==



<source lang="html4strict">

<?php
class myclass {
private $a;

function set_value($val) {
$this->a = $val;
}
}
$obj = new myclass;
$obj->set_value(123);
echo "Member a = $obj->a\n";
$obj->a = 7;
echo "Member a = $obj->a\n";
?>

</source>

==class member variable access: private==



<source lang="html4strict">
<?php
class Staff
{
private $name;
private $title;
protected $wage;
protected function clockIn() {
echo "Member $this->name clocked in at ".date("h:i:s");
}

protected function clockOut() {
echo "Member $this->name clocked out at ".date("h:i:s");
}
}
?>

</source>

==If the variable was defined as private static, it would not be possible to access it directly==



<source lang="html4strict">

<?php
class myclass {
const MYCONST = 123;
private static $value = 567;
}
echo "myclass::MYCONST = " . myclass::MYCONST . "\n";
echo "myclass::$value = " . myclass::$value . "\n";
?>

</source>

==Private and inheritance==



<source lang="html4strict">

<?
class Dog {
private $Name;
}
class Poodle extends Dog { }
$poppy = new Poodle;
$poppy->Name = "Poppy";
print_r($poppy);
?>

</source>

==Private properties are accessible only inside the methods of the class that defined them==



<source lang="html4strict">

<?
class Dog {
private $Name;
private $DogTag;
public function setName($NewName) {
// etc
}
}
?>

</source>

==Protect the class from being misused by accessing the members directly==



<source lang="html4strict">

<?php
class myclass {
private $a;

function set_value($val) {
$this->a = $val;
}
function get_value() {
return $this->a;
}
}
$obj = new myclass;
$obj->set_value(123);
echo "Member a = " . $obj->get_value() . "\n";
?>

</source>

==Using private and public in Classes==



<source lang="html4strict">

<?php
class myPHP5Class {
private $my_variable;
public function my_method($param) {
echo "my_method($param)!\n";
echo "my variable is: ";
echo "{$this->my_variable}\n";
}
}
$myobject = new myPHP5Class();
$myobject->my_method("MyParam");
$myobject->my_variable = 10;
?>

</source>

← Предыдущая	Версия 10:37, 26 мая 2010
(нет различий)

PHP/Class/private - История изменений

в 10:37, 26 мая 2010

Admin: 1 версия