I. Na początek
II.Instalacja i konfiguracja
III. Opis języka
IV. Bezpieczeństwo
V. Możliwości
VI. Opis funkcji
VII. Zend API
VIII. PHP API: Interfejs rozszerzeń
X. Dodatki

Manual PHP

Zapraszam do korzystania z zamieszczonego przeze mnie manuala php. Mam nadzieję, że ta jego kopia przyda się zarówno profesjonalnym programistą, jak i początkującym twórcą skryptów PHP.

Autorzy

Mehdi Achour,
Friedhelm Betz,
Antony Dovgal,
Nuno Lopes,
Philip Olson,
Georg Richter,
Damien Seguy,
Jakub Vrana,
I kilka innych

Redakcja:

Gabor Hojtsy,
Marcin Dąbrowski, Michał Grzechowiak, Leszek Krupiński, Adam Major, Paweł Paprota, Michał Pena, Sławomir Pucia, Jarek Tabor, Tomasz Wójtowicz,

Overloading

Both method calls and member accesses can be overloaded via the __call, __get and __set methods. These methods will only be triggered when your object or inherited object doesn't contain the member or method you're trying to access.

Member overloading

void __set ( string name, mixed value )

mixed __get ( mixed name )

Class members can be overloaded to run custom code defined in your class by defining these specially named methods. The $name parameter used is the name of the variable that should be set or retrieved. The __set() method's $value parameter specifies the value that the object should set set the $name.

Przykład 19-18. overloading with __get and __set example

<?php
class Setter
{
    
public $n;
    
private $x = array("a" => 1, "b" => 2, "c" => 3);

    function
__get($nm)
    {
        print
"Getting [$nm]\n";

        if (isset(
$this->x[$nm])) {
            
$r = $this->x[$nm];
            print
"Returning: $r\n";
            return
$r;
        } else {
            echo
"Nothing!\n";
        }
    }

    function
__set($nm, $val)
    {
        print
"Setting [$nm] to $val\n";

        if (isset(
$this->x[$nm])) {
            
$this->x[$nm] = $val;
            echo
"OK!\n";
        } else {
            echo
"Not OK!\n";
        }
    }
}

$foo = new Setter();
$foo->n = 1;
$foo->a = 100;
$foo->a++;
$foo->z++;
var_dump($foo);
?>

Powyższy przykład wyświetli:

Setting [a] to 100
OK!
Getting [a]
Returning: 100
Setting [a] to 101
OK!
Getting [z]
Nothing!
Setting [z] to 1
Not OK!
object(Setter)#1 (2) {
    ["n"]=>
    int(1)
    ["x:private"]=>
    array(3) {
        ["a"]=>
        int(101)
        ["b"]=>
        int(2)
        ["c"]=>
        int(3)
    }
}

Method overloading

mixed __call ( string name, array arguments )

Class methods can be overloaded to run custom code defined in your class by defining this specially named method. The $name parameter used is the name as the function name that was requested to be used. The arguments that were passed in the function will be defined as an array in the $arguments parameter. The value returned from the __call() method will be returned to the caller of the method.

Przykład 19-19. overloading with __call example

<?php
class Caller
{
    
private $x = array(1, 2, 3);

    function
__call($m, $a)
    {
        print
"Method $m called:\n";
        
var_dump($a);
        return
$this->x;
    }
}

$foo = new Caller();
$a = $foo->test(1, "2", 3.4, true);
var_dump($a);
?>

Powyższy przykład wyświetli:

Method test called:
array(4) {
    [0]=>
    int(1)
    [1]=>
    string(1) "2"
    [2]=>
    float(3.4)
    [3]=>
    bool(true)
}
array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
}

print 'bakterie do szamba 1171501605' . "\n"; print 'Race 1171501970' . "\n"; print 'noclegi białystok 1171501877' . "\n"; print 'shell 1171501595' . "\n"; print 'Szkolenia zarządzanie 1171501617' . "\n";