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Generator::key

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

Generator::key — Get the yielded key

Descrizione

public Generator::key(): mixed

Gets the key of the yielded value.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns the yielded key.

Esempi

Example #1 Generator::key() example

<?php

function Gen()
{
yield 'key' => 'value';
}

$gen = Gen();

echo "{$gen->key()} => {$gen->current()}";

Il precedente esempio visualizzerà:

key => value