# wincache_ucache_get

(PECL wincache >= 1.1.0)

wincache_ucache_get — Gets a variable stored in the user cache

### 说明

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

Gets a variable stored in the user cache.

### 参数

`key`

  The `key` that was used to store the variable in the cache. `key` is case sensitive. `key` can be an array of keys. In this case the return value will be an array of values of each element in the `key` array. If an object, or an array containing objects, is returned, then the objects will be unserialized. See __wakeup() for details on unserializing objects.

`success`

  Will be set to `TRUE` on success and `FALSE` on failure.

### 返回值

If `key` is a string, the function returns the value of the variable stored with that key. The `success` is set to `TRUE` on success and to `FALSE` on failure.

The `key` is an array, the parameter `success` is always set to `TRUE`. The returned array (name => value pairs) will contain only those name => value pairs for which the get operation in user cache was successful. If none of the keys in the key array finds a match in the user cache an empty array will be returned.

### 范例

Example #1 wincache_ucache_get() with `key` as a string

    <?php
    wincache_ucache_add('color', 'blue');
    var_dump(wincache_ucache_get('color', $success));
    var_dump($success);
    ?>

以上例程会输出：

    string(4) "blue"
    bool(true)

Example #2 wincache_ucache_get() with `key` as an array

    <?php
    $array1 = array('green' => '5', 'Blue' => '6', 'yellow' => '7', 'cyan' => '8');
    wincache_ucache_set($array1);
    $array2 = array('green', 'Blue', 'yellow', 'cyan');
    var_dump(wincache_ucache_get($array2, $success));
    var_dump($success);
    ?>

以上例程会输出：

    array(4) { ["green"]=> string(1) "5"
               ["Blue"]=> string(1) "6"
               ["yellow"]=> string(1) "7"
               ["cyan"]=> string(1) "8" }
    bool(true)

### 参见

- wincache_ucache_add() - Adds a variable in user cache only if variable does not already exist in the cache
- wincache_ucache_set() - Adds a variable in user cache and overwrites a variable if it already exists in the cache
- wincache_ucache_delete() - Deletes variables from the user cache
- wincache_ucache_clear() - Deletes entire content of 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
- __wakeup()