News Feed
Sections




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

Blake Gardner:
Practical usage of PHP 5.5 generators yield keyword
June 24, 2013 @ 11:54:42

With the release of PHP 5.5 came a whole group of new features, including the "yield" keyword for better handling of values in iteration. Blake Gardner has posted a practical example of its use to his site today.

The key to understating the way the yield works verses a normal function is that rather than generating all of your data and returning the final array when it's done; you yield the value as it's generated. The state of the generator function is saved after you yield and then its state is restored when called again so the iteration can continue.

He shows a basic use of "yield" in a simple foreach of 1000000 values. In the first example, memory is exhausted and the second yields the values as they come, reducing the overhead significantly. The "range_yield" function returns them as the "for" loop generates them.

0 comments voice your opinion now!
yield feature practical use tutorial generator

Link: http://blakegardner.co/2013/06/24/practical-usage-of-php-5-5-generators-yield-keyword

blog comments powered by Disqus

Similar Posts

Stefan Koopmanshcap's Blog: Installing the Geoip PECL package for Zend Server on OSX

Adam Culp: XHProf PHP Profiling

DevShed: Creating a Simple Threaded Discussion Forum

DevShed: Developing a Short and Simple IQ Test Online Using PHP

Zend Developer Zone: Installing PHP4 and PHP5 Concurrently on One WinXP Computer


Community Events





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


community podcast interview introduction language api opinion laravel refactor framework threedevsandamaybe series wordpress list code unittest install developer release testing

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