Php/docs/function.wincache-ucache-get

• PHP Manual
• WinCache 函数
• Gets a variable stored in the user cache

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

<?phpwincache_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()