Iterator::key

(PHP 5 >= 5.0.0)

Iterator::key — Return the key of the current element

Opis

abstract public scalar Iterator::key ( void )

Returns the key of the current element.

Parametry

Ta funkcja nie posiada parametrów.

Zwracane wartości

Returns scalar on success, or NULL on failure.

Błędy/Wyjątki

Issues E_NOTICE on failure.

add a note User Contributed Notes Iterator::key - [2 notes]

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Lszl Lajos Jnszky ¶

1 year ago


And converts everything to integer except string, so in php the post process could be:



    public function key() {

        $yourKey = $this->createYourKey();

        if (is_object($yourKey) || is_array($yourKey))

            throw new Exception('Array and Object not allowed.');

        elseif (is_string($yourKey))

            return $yourKey;

        else

            return (int) $yourKey;

    }

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Anonymous ¶

1 year ago


Be careful, the returned value must be a scalar! Took me a while to figure out why foreach() doesn't work on my class that handles arrays with object keys...

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