Check if offset exists

PHP Manual
ArrayIterator
Check if offset exists

ArrayIterator::offsetExists

(PHP 5, PHP 7, PHP 8)

ArrayIterator::offsetExists — Check if offset exists

說明

public ArrayIterator::offsetExists(mixed $key): bool

Checks if the offset exists.

警告

本函式還未編寫文件，僅有參數列表。

參數

key: The offset being checked.

返回值

true if the offset exists, otherwise false

參見

ArrayIterator::valid() - Check whether array contains more entries

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