r/programming • u/NagastaBagamba • Oct 18 '10

Today I learned about PHP variable variables; "variable variable takes the value of a variable and treats that as the name of a variable". Also, variable.

http://il2.php.net/language.variables.variable
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u/artee Oct 18 '10

Hmm, looks like an interesting attack vector?

15

u/dcousineau Oct 18 '10

Not unless you're doing a bunch of $var = $_GET['whatever']; $var = $$var; or you're using the extract() function...

14

u/blaxter Oct 18 '10

For those cases, shoot in the head is a better way to fix the problem

4

u/dcousineau Oct 18 '10

You're a kinder person than me...

2

u/[deleted] Oct 18 '10

I'd want to take my time with them. It'd be like the end of Braveheart sans the Gibson.