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array_key_exists()

Checks if the given key or index exists in the array.

array_key_exists()

function array_key_exists(string $key, array $array): bool

Checks if the given key or index exists in the array.

Parameters:

  • $key (string)
  • $array (array)

Returns: bool

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

Internals

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