Iterator::key

(PHP 5 >= 5.0.0)

Iterator::key — بازگرداندن کلید جز فعلی

Description

abstract public scalar Iterator::key ( void )

بازگرداندن کلید جز فعلی.

Parameters

This function has no parameters.

Return Values

بازگرداندن scalar در صورت موفقیت یا NULL در صورت خطا.

Errors/Exceptions

ایجاد E_NOTICE در صورت خطا.

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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