On 09/08/2020 10:01, Manuel Canga wrote:
Hi Internals,
I'd like to open up a discussion around the implementation of a new
functionality: 'import of variables'.
This functionality would allow to create a new 'use vars' keyword in order to
can use( or cannot use ) global variables in local scope( of current file ).
Right now, PHP has no notion of "file scope", and making that the
_default_ would be a huge compatibility break. The "use vars none"
variant that opts _out_ of the global scope might be possible, but at
that point, you can just use the common JS trick of wrapping your code
in a function and immediately running it:
<?php
(function() {
global $a, $c, $d;
echo $a; //1
echo $b; //Warning: undefined var $b
$c = 'a value'; //replace value in global var
})();
The last example, where the function uses "global" but only gets the
globals if they're also "used" in the current file, seems like it would
make more sense using a class, a static method, and some private static
variables, since right now we don't think of a function as "belonging
to" a file in the same way it would belong to a class.
Regards,
--
Rowan Tommins (né Collins)
[IMSoP]
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