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mysqlnd_qc_get_core_stats(PECL mysqlnd_qc >= 1.0.0) mysqlnd_qc_get_core_stats — Statistics collected by the core of the query cache 説明
array
mysqlnd_qc_get_core_stats
( void
)
Returns an array of statistics collected by the core of the cache plugin. The same data fields will be reported for any storage handler because the data is collected by the core. The PHP configuration setting mysqlnd_qc.collect_statistics controls the collection of statistics. The collection of statistics is disabled by default for performance reasons. Disabling the collection of statistics will also disable the collection of time related statistics. The PHP configuration setting mysqlnd_qc.collect_time_statistics controls the collection of time related statistics. The scope of the core statistics is the PHP process. Depending on your deployment model a PHP process may handle one or multiple requests. Statistics are aggregated for all cache entries and all storage handler. It is not possible to tell how much queries originating from mysqli, PDO_MySQL or mysql API calls have contributed to the aggregated data values. パラメータこの関数にはパラメータはありません。 返り値Array of core statistics
例例1 mysqlnd_qc_get_core_stats() example
<?php 上の例の出力は以下となります。 array(26) { ["cache_hit"]=> string(1) "1" ["cache_miss"]=> string(1) "1" ["cache_put"]=> string(1) "1" ["query_should_cache"]=> string(1) "2" ["query_should_not_cache"]=> string(1) "0" ["query_not_cached"]=> string(1) "0" ["query_could_cache"]=> string(1) "2" ["query_found_in_cache"]=> string(1) "1" ["query_uncached_other"]=> string(1) "0" ["query_uncached_no_table"]=> string(1) "0" ["query_uncached_no_result"]=> string(1) "0" ["query_uncached_use_result"]=> string(1) "0" ["query_aggr_run_time_cache_hit"]=> string(1) "4" ["query_aggr_run_time_cache_put"]=> string(3) "395" ["query_aggr_run_time_total"]=> string(3) "399" ["query_aggr_store_time_cache_hit"]=> string(1) "2" ["query_aggr_store_time_cache_put"]=> string(1) "8" ["query_aggr_store_time_total"]=> string(2) "10" ["receive_bytes_recorded"]=> string(2) "65" ["receive_bytes_replayed"]=> string(2) "65" ["send_bytes_recorded"]=> string(2) "29" ["send_bytes_replayed"]=> string(2) "29" ["slam_stale_refresh"]=> string(1) "0" ["slam_stale_hit"]=> string(1) "0" ["request_counter"]=> int(1) ["process_hash"]=> int(3547549858) } 参考
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