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Reworked Members visibility

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Added Method visibility


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@169243 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Aidan Lister 2004-09-26 02:12:31 +00:00
parent c857b14deb
commit 23b60ef80e
1 changed files with 103 additions and 42 deletions
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145
language/oop5/visibility.xml
View file

@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- $Revision: 1.5 $ -->
<sect1 id="language.oop5.visibility">
<title>Visibility</title>
<para>
@ -14,62 +14,63 @@
<para>
Class members must be defined with public, private, or protected.
</para>
<para>
<example>
<title>Member declaration</title>
<programlisting role="php">
<![CDATA[
<?php
/**
* Define MyClass
*/
class MyClass
{
public $public = 'Public';
protected $protected = 'Protected';
private $private = 'Private';
class MyClass {
public $public = "MyClass::public!\n";
protected $protected = "MyClass::Protected!\n";
protected $protected2 = "MyClass::Protected2!\n";
private $private = "MyClass::private!\n";
function printHello() {
print "MyClass::printHello() " . $this->private;
print "MyClass::printHello() " . $this->protected;
print "MyClass::printHello() " . $this->protected2;
}
}
class MyClass2 extends MyClass {
protected $protected = "MyClass2::protected!\n";
function printHello() {
MyClass::printHello();
print "MyClass2::printHello() " . $this->public;
print "MyClass2::printHello() " . $this->protected;
print "MyClass2::printHello() " . $this->protected2;
/* Will result in a Fatal Error: */
//print "MyClass2::printHello() " . $this->private; /* Fatal Error */
}
function printHello()
{
echo $this->public;
echo $this->protected;
echo $this->private;
}
}
$obj = new MyClass();
echo $obj->public; // Works
echo $obj->protected; // Fatal Error
echo $obj->private; // Fatal Error
$obj->printHello(); // Shows Public, Protected and Private
print "Main:: " . $obj->public;
//print $obj->private; /* Fatal Error */
//print $obj->protected; /* Fatal Error */
//print $obj->protected2; /* Fatal Error */
$obj->printHello(); /* Should print */
/**
* Define MyClass2
*/
class MyClass2 extends MyClass
{
// We can redeclare the public and protected method, but not private
protected $protected = 'Protected2';
function printHello()
{
echo $this->public;
echo $this->protected;
echo $this->private;
}
}
$obj2 = new MyClass2();
print "Main:: " . $obj2->private; /* Undefined */
echo $obj->public; // Works
echo $obj2->private; // Undefined
echo $obj2->protected; // Fatal Error
$obj2->printHello(); // Shows Public, Protected2, not Private
//print $obj2->protected; /* Fatal Error */
//print $obj2->protected2; /* Fatal Error */
$obj2->printHello();
?>
]]>
</programlisting>
</example>
</para>
<note>
<simpara>
The use PHP 4 use of declaring a variable with the keyword 'var' is
@ -82,11 +83,71 @@ $obj2->printHello();
<sect2 id="language.oop5.visiblity-methods">
<title>Method Visibility</title>
<para>
.
Class methods must be defined with public, private, or protected. Methods
without any declaration are defined as public.
</para>
<para>
<example>
<title>Method Declaration</title>
<programlisting role="php">
<![CDATA[
<?php
/**
* Define MyClass
*/
class MyClass
{
// Contructors must be public
public __construct() { }
// Declare a public method
public MyPublic() { }
// Declare a protected method
protected MyProtected() { }
// Declare a private method
private MyPrivate() { }
// This is public
Foo()
{
$this->public();
$this->protected();
$this->private();
}
}
$myclass = new MyClass;
$myclass->MyPublic(); // Works
$myclass->MyProtected(); // Fatal Error
$myclass->MyPrivate(); // Fatal Error
$myclass->Foo(); // Public, Protected and Private work
/**
* Define MyClass2
*/
class MyClass2 extends MyClass
{
// This is public
Foo2()
{
$this->public();
$this->protected();
$this->private();
}
}
$myclass2 = new MyClass2;
$myclass2->MyPublic(); // Works
$myclass2->Foo2(); // Public and Protected work, not Private
?>
]]>
</programlisting>
</example>
</para>
</sect2>
</sect1>
<!-- Keep this comment at the end of the file