inherit variables from parent scope with use
function()use($data){}add that global and $globals superglobal variables can also read externally defined global variables, learn about
function () use ($data) {}
is more elegant, but it should be noted that the inherited $data value is related to the context of this closure declaration
for example:
[1]
$data = 1;
function() use($data){}//1
[2]
$data = 1;
function() use($data){}
$data = 2;
,$data,1
$data = 1;
$x = function() use ($data){
var_dump($data);
exit;
};
$data = 2;
function ttt($a)
{
$a();
}
ttt($x);
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