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Maneesha K K
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MAGIC METHODS IN PHP
Disclaimer: This presentation is prepared by trainees ofbaabtra as a part of mentoring program. This is not officialdocument of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
What is a MAGIC METHOD ??
•A special method ,starting with __.
• Methods which will be triggered in response toparticular PHP events.
Some Examples for Magic Methods__construct()__destruct()__get()__set()__isset()__unset()
__construct
A method that gets called when the object is instantiatedEg :
<?phpclass Books
{public function __construct(){echo "Using the magic method...<br />";}}
$physics = new Books;?>
__destruct
It gets run when all the reference to an object is removed.Object is explicitly destroyed.This method is called even if the script exits due to a call to exit()
EG ::<?phpclass Books{function __destruct(){
echo "This object is no longer needed..";}}$a=new Books();unset($a);?>
__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 isreally inaccessible or unavailable in your class.
__isset•It will trigger when isset() function is applied on any property of the classwhich 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.
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