SplFixedArray
PHP Manual

SplFixedArray::offsetExists

(PHP 5 >= 5.3.0)

SplFixedArray::offsetExistsReturns whether the requested index exists

설명

public bool SplFixedArray::offsetExists ( int $index )

Checks whether the requested index index exists.

인수

index

The index being checked.

반환값

TRUE if the requested index exists, otherwise FALSE


SplFixedArray
PHP Manual