ArrayIterator::offsetExists()

(PHP 5,PHP 7)

Check if offset exists

说明

publicArrayIterator::offsetExists(mixed $index) : bool

Checks if the offset exists.

Warning

本函数还未编写文档，仅有参数列表。

参数

$index

The offset being checked.

返回值

TRUEif the offset exists,otherwiseFALSE

参见

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