News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Cormac's Blog:
Read-only object variables in php using magic methods
January 23, 2009 @ 12:09:51

This new post on Cormac's blog shows a little trick you can use to make "read-only" object variables with the help of the handy magic methods built in to PHP5.

You can create read-only object variables by using the "private" keyword and the __get() and __set() magic methods. [...] So now classWithReadOnlyVar::readOnlyVar is only settable from inside the class, but you can read it from anywhere.

His example code initially sets up the read-only variable as a property of the example class. The __get magic method is called to correctly fetch the value but the __set intercepts anything trying to change its value. This same sort of thing can be accomplished with the protected/private keywords in PHP5.

1 comment voice your opinion now!
readonly object variable magic method example


blog comments powered by Disqus

Similar Posts

Stubbles Blog: My wishlist for PHP 6, pt1: The 'object' type hint

Kore Nordmann's Blog: Installing cairo_wrapper on Gentoo

Developer Drive: Building a PHP Ad Tracker: Data Object Design and Coding

Zend Developer Zone: Mobile Platforms Built On Object-Oriented PHP 5

PHP-GTK Community Site: Add icons to GtkMenu


Community Events





Don't see your event here?
Let us know!


release framework deployment symfony zendserver laravel opinion conference tips library community language list bugfix api podcast series developer interview introduction

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework