- var_dump: documentation ( source)
<?php
function yieldFrom($iter) {
$isSubgenerator = $iter instanceof Generator;
$received = null;
$send = true;
while ($iter->valid()) {
if ($isSubgenerator) {
$next = $send ? $iter->send($received) : $iter->throw($received);
} else {
$next = $iter->current();
$iter->next();
}
try {
$received = yield $next;
$send = true;
} catch (Exception $e) {
if ($isSubgenerator) {
$received = $e;
$send = false;
} else {
throw $e;
}
}
}
return $isSubgenerator ? $iter->getReturn() : null;
};
function gen1() {
yield 1;
yield 2;
yield 3;
}
$g = gen1();
$x = yieldFrom($g);
foreach($x as $val) { var_dump($val); }