# apcu_cache_info

(PECL apcu >= 4.0.0)

apcu_cache_info — Retrieves cached information from APCu's data store

### 说明

apcu_cache_info ([ bool `$limited` = `FALSE` ] ) : array

Retrieves cached information and meta-data from APC's data store.

### 参数

`limited`

  If `limited` is `TRUE`, the return value will exclude the individual list of cache entries. This is useful when trying to optimize calls for statistics gathering.

### 返回值

Array of cached data (and meta-data) 或者在失败时返回 `FALSE`

> Note: apcu_cache_info() will raise a warning if it is unable to retrieve APC cache data. This typically occurs when APC is not enabled.

### 更新日志

版本 | 说明
--- | ---
3.0.11 | The `limited` parameter was introduced.
3.0.16 | The "filehits" option for the `cache_type` parameter was introduced.

### 范例

Example #1 A apcu_cache_info() example

    <?php
    print_r(apcu_cache_info());
    ?>

以上例程的输出类似于：

    Array
    (
        [num_slots] => 2000
        [ttl] => 0
        [num_hits] => 9
        [num_misses] => 3
        [start_time] => 1123958803
        [cache_list] => Array
            (
                [0] => Array
                    (
                        [filename] => /path/to/apcu_test.php
                        [device] => 29954
                        [inode] => 1130511
                        [type] => file
                        [num_hits] => 1
                        [mtime] => 1123960686
                        [creation_time] => 1123960696
                        [deletion_time] => 0
                        [access_time] => 1123962864
                        [ref_count] => 1
                        [mem_size] => 677
                    )
                [1] => Array (...iterates for each cached file)
    )

### 参见

- APCu configuration directives
- APCUIterator::getTotalSize() - Get total cache size
- APCUIterator::getTotalHits() - Get total cache hits
- APCUIterator::getTotalCount() - Get total count