PHP 5.4.36 Released

Generator::throw

(PHP 5 >= 5.5.0)

Generator::throwThrow an exception into the generator

Descrição

public mixed Generator::throw ( Exception $exception )

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.

Parâmetros

exception

Exception to throw into the generator.

Exemplos

Exemplo #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'));
?>

O exemplo acima irá imprimir:

Foo
Exception: Test
Bar

Valor Retornado

Returns the yielded value.

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