# wincache_ucache_clear

(PECL wincache >= 1.1.0)

wincache_ucache_clear — Deletes entire content of the user cache

### 说明

wincache_ucache_clear ( void ) : bool

Clears/deletes all the values stored in the user cache.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 using wincache_ucache_clear()

    <?php
    wincache_ucache_set('green', 1);
    wincache_ucache_set('red', 2);
    wincache_ucache_set('orange', 4);
    wincache_ucache_set('blue', 8);
    wincache_ucache_set('cyan', 16);
    $array1 = array('green', 'red', 'orange', 'blue', 'cyan');
    var_dump(wincache_ucache_get($array1));
    var_dump(wincache_ucache_clear());
    var_dump(wincache_ucache_get($array1));
    ?>

以上例程会输出：

    array(5) { ["green"]=> int(1)
               ["red"]=> int(2)
               ["orange"]=> int(4)
               ["blue"]=> int(8)
               ["cyan"]=> int(16) }
    bool(true)
    bool(false)

### 参见

- wincache_ucache_set() - Adds a variable in user cache and overwrites a variable if it already exists in the cache
- wincache_ucache_add() - Adds a variable in user cache only if variable does not already exist in the cache
- wincache_ucache_delete() - Deletes variables from the user cache
- wincache_ucache_get() - Gets a variable stored in the user cache
- wincache_ucache_exists() - Checks if a variable exists in the user cache
- wincache_ucache_meminfo() - Retrieves information about user cache memory usage
- wincache_ucache_info() - Retrieves information about data stored in the user cache