Online PHP editor | refs for pvBBr

<?php function generator_eval(Generator $gen) { foreach ($gen as $k => $v) {} } function uppercase(Traversable $in) { foreach ($in as $word) { yield strtoupper($word); } } function each_println(Traversable $in) { foreach ($in as $line) { echo "$line\n"; } } each_println(uppercase(new ArrayIterator(["foo", "bar", "baz"])));