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PHP 7 Closure::call()
* Closure::call()
class Foo
private $foo = 'bar';
$getFooCallback = function() {
return $this->foo;
//PHP5 style
$binding = $getFooCallback->bindTo(new Foo,'Foo');
echo $binding().PHP_EOL;
//PHP7 style
echo $getFooCallback->call(new Foo).PHP_EOL;
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