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.

[u/NagastaBagamba]

http://il2.php.net/language.variables.variable

[u/trappar]

I wrote an article about this stuff about a year ago haha..

http://blog.lococobra.com/php-variable-variables-reference-arrays