Returns the data associated with an object

# SplObjectStorage::offsetGet

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplObjectStorage::offsetGet — Returns the data associated with an object

### 说明

public function SplObjectStorage::offsetGet(object `$object`): mixed

Returns the data associated with an object in the storage.

### 参数

`object`

  The object to look for.

### 返回值

The data previously associated with the object in the storage.

### 错误／异常

Throws UnexpectedValueException when `object` could not be found.

### 示例

示例 #1 SplObjectStorage::offsetGet() example

    <?php
    $s = new SplObjectStorage;

    $o1 = new stdClass;
    $o2 = new stdClass;

    $s[$o1] = "hello";
    $s->attach($o2);

    var_dump($s->offsetGet($o1)); // Similar to $s[$o1]
    var_dump($s->offsetGet($o2)); // Similar to $s[$o2]
    ?>

以上示例的输出类似于：

    string(5) "hello"
    NULL

### 参见

- SplObjectStorage::offsetSet() - Associates data to an object in the storage
- SplObjectStorage::offsetExists() - Checks whether an object exists in the storage
- SplObjectStorage::offsetUnset() - Removes an object from the storage

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