PHP - How Practical Is This?
- From: james.homme@xxxxxxxxxxxx
- To: programmingblind@xxxxxxxxxxxxx
- Date: Tue, 5 Aug 2008 07:34:39 -0400
Hi,
I don't understand how this works, so I don't know how important or
practical it is. This is some text from a PHP book I'm reading.
Variable Variables
On occasion, you may want to use a variable whose content can be treated
dynamically
as a variable in itself. Consider this typical variable assignment:
$recipe = "spaghetti";
Interestingly, you can treat the value spaghetti as a variable by placing a
second
dollar sign in front of the original variable name and again assigning
another value:
$$recipe = "& meatballs";
This in effect assigns & meatballs to a variable named spaghetti.
Therefore, the following two snippets of code produce the same result:
echo $recipe $spaghetti;
echo $recipe ${$recipe};
The result of both is the string spaghetti & meatballs.
Thanks.
Jim
James D Homme, Usability Engineering, Highmark Inc.,
james.homme@xxxxxxxxxxxx, 412-544-1810
"The difference between those who get what they wish for and those who
don't is action. Therefore, every action you take is a complete
success,regardless of the results." -- Jerrold Mundis
Highmark internal only: For usability and accessibility:
http://highwire.highmark.com/sites/iwov/hwt093/
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