# apcu_fetch

(PECL apcu >= 4.0.0)

apcu_fetch — Fetch a stored variable from the cache

### 说明

apcu_fetch ( mixed `$key` [, bool `&$success` ] ) : mixed

Fetchs an entry from the cache.

### 参数

`key`

  The `key` used to store the value (with apcu_store()). If an array is passed then each element is fetched and returned.

`success`

  Set to `TRUE` in success and `FALSE` in failure.

### 返回值

The stored variable or array of variables on success; `FALSE` on failure

### 范例

Example #1 A apcu_fetch() example

    <?php
    $bar = 'BAR';
    apcu_store('foo', $bar);
    var_dump(apcu_fetch('foo'));
    ?>

以上例程会输出：

    string(3) "BAR"

### 更新日志

版本 | 说明
--- | ---
3.0.17 | The `success` parameter was added.

### 参见

- apcu_store() - Cache a variable in the data store
- apcu_delete() - Removes a stored variable from the cache
- APCUIterator