Is it possible to access outer local varialbe in a PHP sub-function?
In below code, I want to access variable $l
in inner function bar. Declaring $l
as global $l
in bar doesn’t work.
function foo() { $l = "xyz"; function bar() { echo $l; } bar(); } foo();
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Answer
You could probably use a Closure, to do just that…
Edit : took some time to remember the syntax, but here’s what it would look like :
function foo() { $l = "xyz"; $bar = function () use ($l) { var_dump($l); }; $bar(); } foo();
And, running the script, you’d get :
$ php temp.php string(3) "xyz"
A couple of note :
- You must put a
;
after the function’s declaration ! - You could
use
the variable by reference, with a&
before it’s name :use (& $l)
For more informations, as a reference, you can take a look at this page in the manual : Anonymous functions