$gen = (function () {
try {
yield 1;
} catch (Exception $e) {
echo $e->getMessage();
}
})();
$gen->throw(new Exception('gen throw exception'));
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
Generator::throw — Throw an exception into the generator
Throws an exception into the generator and resumes execution of the generator.
The behavior will be the same as if the current yield expression was replaced with
a throw $exception statement.
If the generator is already closed when this method is invoked, the exception will be thrown in the caller's context instead.
exceptionException to throw into the generator.
Returns the yielded value.
Example #1 Throwing an exception into a generator
<?php
function gen() {
echo "Foo\n";
try {
yield;
} catch (Exception $e) {
echo "Exception: {$e->getMessage()}\n";
}
echo "Bar\n";
}
$gen = gen();
$gen->rewind();
$gen->throw(new Exception('Test'));
?>Il precedente esempio visualizzerà:
Foo Exception: Test Bar
$gen = (function () {
try {
yield 1;
} catch (Exception $e) {
echo $e->getMessage();
}
})();
$gen->throw(new Exception('gen throw exception'));$gen = (function () {
try {
yield 1;
} catch (Exception $e) {
echo $e->getMessage();
}
})();
$gen->throw(new Exception('gen throw exception'));