wincache_ucache_delete()
(PECL wincache >= 1.1.0)
Deletes variables from the user cache
说明
wincache_ucache_delete(mixed $key): bool
Deletes the elements in the user cache pointed by$key.
参数
- $key
The$keythat was used to store the variable in the cache.$keyis case sensitive.$keycan be an array of keys.
返回值
成功时返回TRUE
,或者在失败时返回FALSE
。
If$keyis an array then the function returns FALSE
if every element of the array fails to get deleted from the user cache, otherwise returns an array which consists of all the keys that are deleted.
范例
Example #1 Using wincache_ucache_delete() with$keyas a string
<?php wincache_ucache_set('foo', 'bar'); var_dump(wincache_ucache_delete('foo')); var_dump(wincache_ucache_exists('foo')); ?>
以上例程会输出:
bool(true) bool(false)
Example #2 Usingwincache_ucache_delete() with$keyas an array
<?php $array1 = array('green' => '5', 'blue' => '6', 'yellow' => '7', 'cyan' => '8'); wincache_ucache_set($array1); $array2 = array('green', 'blue', 'yellow', 'cyan'); var_dump(wincache_ucache_delete($array2)); ?>
以上例程会输出:
array(4) { [0]=> string(5) "green" [1]=> string(4) "Blue" [2]=> string(6) "yellow" [3]=> string(4) "cyan" }
Example #3 Using wincache_ucache_delete() with$keyas an array where some elements cannot be deleted
<?php $array1 = array('green' => '5', 'blue' => '6', 'yellow' => '7', 'cyan' => '8'); wincache_ucache_set($array1); $array2 = array('orange', 'red', 'yellow', 'cyan'); var_dump(wincache_ucache_delete($array2)); ?>
以上例程会输出:
array(2) { [0]=> string(6) "yellow" [1]=> string(4) "cyan" }
参见
wincache_ucache_set()
Adds a variable in user cache and overwrites a variable if it already exists in the cachewincache_ucache_add()
Adds a variable in user cache only if variable does not already exist in the cachewincache_ucache_get()
Gets a variable stored in the user cachewincache_ucache_clear()
Deletes entire content of the user cachewincache_ucache_exists()
Checks if a variable exists in the user cachewincache_ucache_meminfo()
Retrieves information about user cache memory usagewincache_ucache_info()
Retrieves information about data stored in the user cache