Php/docs/arrayiterator.offsetunset

• PHP Manual
• ArrayIterator
• Unset value for an offset

ArrayIterator::offsetUnset

(PHP 5, PHP 7)

ArrayIterator::offsetUnset — Unset value for an offset

说明

public ArrayIterator::offsetUnset ( mixed $index ) : 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.

参数

index

The offset to unset.

返回值

没有返回值。

参见

• ArrayIterator::offsetGet() - Get value for an offset
• ArrayIterator::offsetSet() - Set value for an offset