Unset value for an offset

ArrayIterator::offsetUnset

(PHP 5, PHP 7, PHP 8)

ArrayIterator::offsetUnsetUnset value for an offset

說明

public ArrayIterator::offsetUnset(mixed $key): void

Unsets a value for an offset.

If iteration is in progress, and ArrayIterator::offsetUnset() is used to unset the current index of iteration, the iteration position will be advanced to the next index. Since the iteration position is also advanced at the end of a foreach loop body, use of ArrayIterator::offsetUnset() inside a foreach loop may result in indices being skipped.

參數

key

The offset to unset.

返回值

沒有返回值。

參見

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