wincache_ucache_exists

(PECL wincache >= 1.1.0)

wincache_ucache_exists — Checks if a variable exists in the user cache

说明

wincache_ucache_exists ( string $key ) : bool

Checks if a variable with the key exists in the user cache or not.

参数

key

The key that was used to store the variable in the cache. key is case sensitive.

返回值

Returns TRUE if variable with the key exitsts, otherwise returns FALSE.

范例

Example #1 Using wincache_ucache_exists()

<?php
if (!wincache_ucache_exists('green'))
    wincache_ucache_set('green', 1);
var_dump(wincache_ucache_exists('green'));
?>

以上例程会输出：

bool(true)

参见

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