# SplObjectStorage::valid

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

SplObjectStorage::valid — Returns if the current iterator entry is valid

### 说明

public SplObjectStorage::valid(): bool

Returns if the current iterator entry is valid.

### 参数

此函数没有参数。

### 返回值

Returns `true` if the iterator entry is valid, `false` otherwise.

### 示例

示例 #1 SplObjectStorage::valid() example

`<?php
$s = new SplObjectStorage();
$o1 = new stdClass;
$o2 = new stdClass;
$s->attach($o1, "d1");
$s->attach($o2, "d2");
$s->rewind();
while($s->valid()) {
echo $s->key()."\n";
$s->next();
}
?>`

以上示例的输出类似于：

    0
    1

### 参见

- SplObjectStorage::current() - Returns the current storage entry
- SplObjectStorage::getInfo() - Returns the data associated with the current iterator entry

`↑` and `↓` to navigate • `Enter` to select • `Esc` to close • `/` to open