Magic methods in php

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MAGIC METHODS IN PHP

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document of baabtra –Mentoring Partner
Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd

4. What is a MAGIC METHOD ??
•A special method ,starting with __.
• Methods which will be triggered in response to
particular PHP events.

5. Some Examples for Magic Methods
__construct()
__destruct()
__get()
__set()
__isset()
__unset()

6. __construct
A method that gets called when the object is instantiated
Eg :
<?php
class Books
{
public function __construct()
{
echo "Using the magic method...<br />";
}
}
$physics = new Books;
?>

7. __destruct
It gets run when all the reference to an object is removed.
Object is explicitly destroyed.
This method is called even if the script exits due to a call to exit()
EG ::
<?php
class Books
{
function __destruct()
{
echo "This object is no longer needed..";
}
}
$a=new Books();
unset($a);
?>

8. __get
•This method called when your object attempt to read property or variable
of the class which is inaccessible or unavailable.
__set
•When object of your class attempts to set value of the property which is
really inaccessible or unavailable in your class.
__isset
•It will trigger when isset() function is applied on any property of the class
which is inaccessible or unavailable.
__unset
•It is something opposite of isset method.
•This method called when unset() function called on inaccessible
•or unavailable property of the class.

9. EXAMPLE

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