wincache_ucache_exists
(PECL wincache >= 1.1.0)
wincache_ucache_exists — Checks if a variable exists in the user cache
Description
bool wincache_ucache_exists
( string
$key
)
Checks if a variable with the key exists in the user cache or not.
Parameters
-
key -
The
keythat was used to store the variable in the cache.keyis case sensitive.
Return Values
Returns TRUE if variable with the key exitsts,
otherwise returns FALSE.
Examples
Example #1 Using wincache_ucache_exists()
<?php
if (!wincache_ucache_exists('green'))
wincache_ucache_set('green', 1);
var_dump(wincache_ucache_exists('green'));
?>
The above example will output:
bool(true)
See Also
- 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_get() - Gets a variable stored in the user cache
- wincache_ucache_clear() - Deletes entire content of the user cache
- wincache_ucache_delete() - Deletes variables from 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
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Изменение поведения PHP
- Windows Cache for PHP
- wincache_fcache_fileinfo
- wincache_fcache_meminfo
- wincache_lock
- wincache_ocache_fileinfo
- wincache_ocache_meminfo
- wincache_refresh_if_changed
- wincache_rplist_fileinfo
- wincache_rplist_meminfo
- wincache_scache_info
- wincache_scache_meminfo
- wincache_ucache_add
- wincache_ucache_cas
- wincache_ucache_clear
- wincache_ucache_dec
- wincache_ucache_delete
- wincache_ucache_exists
- wincache_ucache_get
- wincache_ucache_inc
- wincache_ucache_info
- wincache_ucache_meminfo
- wincache_ucache_set
- wincache_unlock
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