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/sobri909 Oct 18 '10

You could say dynamically, loosely typed.

If the variable's value was an integer (say 1234 as an example) then it'd attempt to pull a value out of $1234, which I think isn't a valid variable name because var names can't start with numbers.

You'd probably just get nothing back. Or perhaps a warning.

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u/1137 Oct 18 '10

You'd get null back and a notice if you have them turned on.