Description
Sometime in php we often seen __ (underscore) character in naming methods. why they use that ??
that's magic methods !!. magic method in php always start with underscore __. for example :
public function __sleep()
{
//to do here
}
you cannot use this function name in any classes unless you want this magic method assosiate with your classes. so when we need magic method ? it's depend on what your need. if you not need this magic method don't use them.
PHP have several magic method, here's the list :
__construct()
is the method name for the constructor. The constructor is called on an object after it has been created.
class CAR
{
public $brand = '';
public function __construct($name)
{
$this->brand = $name ; }
}
$person = new CAR ( "honda" );
echo $person->brand;__destruct()
Destructors called during the script shutdown have HTTP headers already sent. Attempting to throw an exception from a destructor can causes a fatal error.
class CAR
{
public function __destruct()
{
print "destroy the class";
}
}
$person = new CAR ();__call()
this methods will call another function that inaccessible property like private / protected.
namespace test\foo; class A { public static function __callStatic($method, $args) { echo __METHOD__ . "\n"; return call_user_func_array(__CLASS__ . '::' . $method, $args); } protected static function foo() { echo __METHOD__ . "\n"; } } A::foo();
__callStatic()
class A {
public function __call($method, $parameters) {
echo "I'm the __call() magic method".PHP_EOL;
}
public static function __callStatic($method, $parameters) {
echo "I'm the __callStatic() magic method".PHP_EOL;
}
}
class B extends A {
public function bar() {
A::foo();
}
}
A::foo();
(new A)->foo();
B::bar();
(new B)->bar();
Result :
I'm the __callStatic() magic method
I'm the __call() magic method
I'm the __callStatic() magic method
I'm the __call() magic method
__get()
is utilized for reading data from inaccessible properties.
__set()
is run when writing data to inaccessible properties.
__isset()
__unset()
__sleep()
__wakeup()
__toString()
__invoke()
__set_state()
__clone()
__debugInfo()
*Note :
All example i taken from google (mostly from stackoverflow). thanks to the owner whose have this code :).
