Retrieves information about files cached in the session cache

# wincache_scache_info

(PECL wincache >= 1.1.0)

wincache_scache_info — Retrieves information about files cached in the session cache

### 说明

function wincache_scache_info(bool `$summaryonly` = `false`): array|false

Retrieves information about session cache content and its usage.

### 参数

`summaryonly`

  Controls whether the returned array will contain information about individual cache entries along with the session cache summary.

### 返回值

Array of meta data about session cache 或者在失败时返回 `false`

The array returned by this function contains the following elements:

- `total_cache_uptime` - total time in seconds that the session cache has been active
- `total_item_count` - total number of elements that are currently in the session cache
- `is_local_cache` - true is the cache metadata is for a local cache instance, false if the metadata is for the global cache
- `total_hit_count` - number of times the data has been served from the cache
- `total_miss_count` - number of times the data has not been found in the cache

- `scache_entries` - an array that contains the information about all the cached items:

  - `key_name` - name of the key which is used to store the data
  - `value_type` - type of value stored by the key
  - `use_time` - time in seconds since the file has been accessed in the opcode cache
  - `last_check` - time in seconds since the file has been checked for modifications
  - `ttl_seconds` - time remaining for the data to live in the cache, 0 meaning infinite
  - `age_seconds` - time elapsed from the time data has been added in the cache
  - `hitcount` - number of times data has been served from the cache

### 示例

示例 #1 A wincache_scache_info() example

    <pre>
    <?php
    print_r(wincache_scache_info());
    ?>
    </pre>

以上示例会输出：

    Array
    (
        [total_cache_uptime] => 17357
        [total_file_count] => 121
        [total_hit_count] => 36562
        [total_miss_count] => 201
        [scache_entries] => Array
            (
                [1] => Array
                    (
                        [file_name] => c:\inetpub\wwwroot\checkcache.php
                        [add_time] => 17356
                        [use_time] => 7
                        [last_check] => 10
                        [hit_count] => 454
                        [function_count] => 0
                        [class_count] => 1
                    )
                [2] => Array (...iterates for each cached file)
            )
    )

### 参见

- wincache_fcache_fileinfo() - Retrieves information about files cached in the file cache
- wincache_fcache_meminfo() - Retrieves information about file cache memory usage
- wincache_ocache_meminfo() - Retrieves information about opcode cache memory usage
- wincache_rplist_fileinfo() - Retrieves information about resolve file path cache
- wincache_rplist_meminfo() - Retrieves information about memory usage by the resolve file path cache
- wincache_refresh_if_changed() - Refreshes the cache entries for the cached files
- wincache_ucache_meminfo() - Retrieves information about user cache memory usage
- wincache_ucache_info() - Retrieves information about data stored in the user cache
- wincache_scache_meminfo() - Retrieves information about session cache memory usage

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