News Feed

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

Evert Pot's Blog:
Numeric string comparison in PHP
April 26, 2011 @ 09:23:47

In this new post to his blog Evert Pot reminds you (the PHP developer) about the loose and strict typing checks that you need to do when checking the values of your variables and never just assume. PHP's loose typing tendencies can cause issues if you're not paying attention.

As long as you make sure you always use strict checking (=== and !==) where you can, and fall back to the loose checks when you must. As a PHP developer, I think it's very important to understand and memorize exactly how these work, whether you're writing new code, or maintaining existing code.

He points out a specific example of some code that seems counter-intuitive when you compare how it reads and how it actually works (strings converted to floats and evaluated)

The moral is: always do strict checks when you are able to.
0 comments voice your opinion now!
numeric comparison evaluate loose typing typecheck

blog comments powered by Disqus

Similar Posts

Allan MacGregor: Hello Hack

Tobias Schlitt's Blog: Funny speed considerations

Ian Barber's Blog: Benford's Law

DevShed: The Basics of Using the Factory Pattern in PHP 5

Evert Pot's Blog: Numeric string comparison in PHP

Community Events

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

api interview application yii2 introduction language php7 framework composer project part2 example list community podcast symfony conference opinion laravel series

All content copyright, 2015 :: - Powered by the Solar PHP Framework