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__isset()

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__set()

__isset()

public void __isset ( string $key )

Does a certain key exist in the data?

Parameters

  • (string) $key: The requested data key.

Returns

  • (void)

Description

Does a certain key exist in the data?

Note that this is slightly different from normal PHP isset(); it will say the key is set, even if the key value is null or otherwise empty.