gaskell.org » php http://gaskell.org picking up where teh rest leave off Sun, 15 Nov 2009 07:55:08 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Variable variables in PHP http://gaskell.org/variable-variables-in-php/ http://gaskell.org/variable-variables-in-php/#comments Sat, 01 Apr 2006 00:53:36 +0000 andy gaskell http://gaskell.org/variable-variables-in-php/ While learning PHP I came across a feature that’s completely new to me – variable variables. With variable variables you can dynamically assign variable names and reference those dynamic names. I understand how they work, I’m just not sure how useful they’d be. I suppose an array of variable variables could pass as a poor man’s Hashtable or NameValueCollection.

Here’s some code that demonstrates variable variables:

<?php
     $recipe = "beans";
     $$recipe = "& big ideas";

     echo("$recipe $beans");
     echo("<br/>");
     echo("$recipe ${$recipe}");
?>

Here’s the output:

beans & big ideas
beans & big ideas

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