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There are at least two major differences between closures and static-via-my-if-0 variables.
Here's the first. Look closely at this code and see if you can figure out what its output will be before you run it.
I'll use tilly's spoiler trick:
In other words, the closure is the same variable through all calls, including recursive ones, while each recursive call to the func_w_static gets its own copy. The cool thing about that, of course, is that if you call func_w_closure again, you see that each recursive instance keeps its value! The other difference is that closures can be shared among functions -- if you stick another function into the lexical scope of `$static' above, some_function and your new function will refer to the same variable. -dlc In reply to (dchetlin - static vs. closure) RE(3): lexical weirdness(?)
by dchetlin
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