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<?php
class Foo {}
// variable
$tests = [];
$anon = function() use ($tests) {
$tests[0] = [1, 2, 3];
};
$anon();
var_dump($tests);
// reference
$references = [];
$anon2 = function() use (&$references) {
$tests;
$references[0] = [1, 2, 3];
};
$anon2();
var_dump($references);
// reference and instanceof
$foo = new Foo();
$anon3 = function() use (&$foo) {
$a = new stdClass();
if($a instanceof $foo) {
echo get_class($foo) . PHP_EOL;
} else {
echo get_class($a) .PHP_EOL;
}
};
$anon3();
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