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array_key_first()

Gets the first key of an array.

array_key_first()

function array_key_first(array $array): mixed

Gets the first key of an array.

Parameters:

  • $array (array)

Returns: mixed

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how array_key_first is implemented in the compiler, see the internals page.