<?php
use function Sabre\Event\coroutine;
use Sabre\Event\Promise;
require __DIR__ . '/vendor/autoload.php';
function adder($a, $b)
{
return new Promise(function ($resolve) use($a, $b) {
$resolve($a + $b);
});
}
coroutine(function () {
try {
$result = (yield adder(1, 2));
$result = (yield adder($result, 3));
$result = (yield adder($result, 4));
echo $result;
} catch (Exception $e) {
echo $e->getMessage();
}
})->wait();
$promise->fulfill($value . ", how are ya?");
}, 2);
return $promise;
})->then(function ($value) {
echo "Step 4\n";
// This is the final event handler.
return $value . " you rock!";
})->wait();
echo $result, "\n";
/* Now an identical example, this time with coroutines. */
$result = coroutine(function () {
$promise = new Promise();
/* After 2 seconds we fulfill it */
Loop\setTimeout(function () use($promise) {
echo "Step 1\n";
$promise->fulfill("hello");
}, 2);
$value = (yield $promise);
echo "Step 2\n";
$value .= ' world';
echo "Step 3\n";
$promise = new Promise();
Loop\setTimeout(function () use($promise, $value) {
$promise->fulfill($value . ", how are ya?");
}, 2);
$value = (yield $promise);
echo "Step 4\n";
// This is the final event handler.
(yield $value . " you rock!");
})->wait();
echo $result, "\n";
<?php
use Sabre\Event\Promise;
use function Sabre\Event\coroutine;
coroutine(function () {
(yield asyncOp());
(yield asyncOp2());
});