GoLang Iterator::key

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PHP Iterator::key

PHP original manual for Iterator::key [ show | php.net ]

Iterator::key

(PHP 5, PHP 7)

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

Description

abstract public scalar Iterator::key ( void )

Returns the key of the current element.

Parameters

This function has no parameters.

Return Values

Returns scalar on success, or NULL on failure.

Errors/Exceptions

Issues E_NOTICE on failure.