# apcu_delete

(PECL apcu >= 4.0.0)

apcu_delete — Removes a stored variable from the cache

### 说明

apcu_delete ( mixed `$key` ) : bool

Removes a stored variable from the cache.

### 参数

`key`

  A `key` used to store the value as a string for a single key, or as an array of strings for several keys, or as an APCUIterator object.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 A apcu_delete() example

    <?php
    $bar = 'BAR';
    apcu_store('foo', $bar);
    apcu_delete('foo');
    // this is obviously useless in this form

    // Alternatively delete multiple keys.
    apcu_delete(['foo', 'bar', 'baz']);

    // Or use an Iterator with a regular expression.
    apcu_delete(new APCUIterator('#^myprefix_#'));
    ?>

### 参见

- apcu_store() - Cache a variable in the data store
- apcu_fetch() - Fetch a stored variable from the cache
- apcu_clear_cache() - Clears the APCu cache
- APCUIterator