Retrieves information about data stored in the user cache

说明

array wincache_ucache_info ([ bool $summaryonly = false [, string $key ]] )

Retrieves information about data stored in the user cache.

参数

summaryonly: Controls whether the returned array will contain information about individual cache entries along with the user cache summary.
key: The key of an entry in the user cache. If specified then the returned array will contain information only about that cache entry. If not specified and summaryonly is set to false then the returned array will contain information about all entries in the cache.

返回值

Array of meta data about user 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 user cache has been active
total_item_count - total number of elements that are currently in the user 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
ucache_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
- is_session - indicates if the data is a session variable
- 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

范例

Example #1 Using wincache_ucache_info()


<?php
wincache_ucache_get('green');
wincache_ucache_set('green', 2922);
wincache_ucache_get('green');
wincache_ucache_get('green');
wincache_ucache_get('green');
print_r(wincache_ucache_info());
?>

以上例程会输出：

Array 
( ["total_cache_uptime"] => int(0)
  ["is_local_cache"] => bool(false)
  ["total_item_count"] => int(1) 
  ["total_hit_count"] => int(3) 
  ["total_miss_count"] => int(1) 
  ["ucache_entries"] => Array(1) 
    ( [1] => Array(6)
      ( 
        ["key_name"] => string(5) "green"
        ["value_type"] => string(4) "long" 
        ["is_session"] => int(0) 
        ["ttl_seconds"] => int(0)
        ["age_seconds"] => int(0)
        ["hitcount"] => int(3) 
       ) 
    ) 
)

参见

wincache_fcache_meminfo() - Retrieves information about file cache memory usage
wincache_ocache_fileinfo() - Retrieves information about files cached in the opcode cache
wincache_ocache_meminfo() - Retrieves information about opcode cache memory usage
wincache_rplist_meminfo() - Retrieves information about memory usage by the resolve file path cache
wincache_rplist_fileinfo() - Retrieves information about 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_scache_info() - Retrieves information about files cached in the session cache
wincache_scache_meminfo() - Retrieves information about session cache memory usage