Online PHP editor | refs for i7Sbi

<?php function gen1() { echo "Gen1\n"; $a = yield 1; echo "Resumed. a is $a\n"; } function gen2() { echo "Gen2\n"; $b = yield 2; echo "Resumed. b is $b\n"; } function yf() { yield from gen1(); echo "Between\n"; yield from gen2(); } $g = yf(); echo "Autoprime"; var_dump($g->current()); echo "Sending\n"; var_dump($g->send(42)); echo "Done\n";