--TEST--
Values can be sent back to the generator
--FILE--
<?php

function gen() {
    var_dump(yield "yield foo");
    var_dump(yield "yield bar");
}

$gen = gen();
var_dump($gen->current());
$gen->send("send bar");
var_dump($gen->current());
$gen->send("send foo");

?>
--EXPECT--
string(9) "yield foo"
string(8) "send bar"
string(9) "yield bar"
string(8) "send foo"