# AppendIterator::valid

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

AppendIterator::valid — Checks validity of the current element

### 说明

public AppendIterator::valid(): bool

Checks validity of the current element.

### 参数

此函数没有参数。

### 返回值

Returns `true` if the current iteration is valid, `false` otherwise.

### 参见

- AppendIterator::current() - Gets the current value
- AppendIterator::key() - Gets the current key
- AppendIterator::next() - Moves to the next element
- AppendIterator::rewind() - Rewinds the Iterator

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