throw

Generator::throw

Throw an exception into the generator

ENTITY

Throws an exception into the generator and resumes execution of the generator. The behavior will be the same as if the current ENTITY 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.

ENTITY

exception
Exception to throw into the generator.

ENTITY

Returns the yielded value.

ENTITY

<?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'));
?>

    

Foo
Exception: Test
Bar