# wincache_ucache_inc

(PECL wincache >= 1.1.0)

wincache_ucache_inc — Increments the value associated with the key

### 说明

wincache_ucache_inc ( string `$key` [, int `$inc_by` = 1 [, bool `&$success` ]] ) : mixed

Increments the value associated with the `key` by 1 or as specified by `inc_by`.

### 参数

`key`

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

`inc_by`

  The value by which the variable associated with the `key` will get incremented. If the argument is a floating point number it will be truncated to nearest integer. The variable associated with the `key` should be of type long, otherwise the function fails and returns `FALSE`.

`success`

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

### 返回值

Returns the incremented value on success and `FALSE` on failure.

### 范例

Example #1 Using wincache_ucache_inc()

    <?php
    wincache_ucache_set('counter', 1);
    var_dump(wincache_ucache_inc('counter', 2921, $success));
    var_dump($success);
    ?>

以上例程会输出：

    int(2922)
    bool(true)

### 参见

- wincache_ucache_dec() - Decrements the value associated with the key
- wincache_ucache_cas() - Compares the variable with old value and assigns new value to it