Here is an explanation of the values that appear in connection->stat() returned string. It was taken from Ai Hua's April 29, 2006 answer on http://forums.mysql.com/read.php?12,86570,86570.
Uptime--The number of seconds the MySQL server has been running.
Threads--The number of active threads (clients).
Questions--The number of questions (queries) from clients since the server was started.
Slow queries--The number of queries that have taken more than long_query_time seconds.
Opens--The number of tables the server has opened.
Flush tables--The number of flush-*, refresh, and reload commands the server has executed.
Open tables--The number of tables that currently are open.
Queries per second avg--Questions divided by Uptime
mysqli::stat
mysqli_stat
(PHP 5, PHP 7)
mysqli::stat -- mysqli_stat — 現在のシステム状態を取得する
説明
オブジェクト指向型
public mysqli::stat(): string|false
手続き型
mysqli_stat() は、'mysqladmin status' コマンドが 返すのと同じ情報を返します。この中には、起動からの秒数・起動中の スレッドの数・リロード数および開かれているテーブルなどが含まれます。
返り値
サーバーの状態を示す文字列を返します。エラー時には false を返します。
例
例1 mysqli::stat() の例
オブジェクト指向型
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* 接続状況をチェックします */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
printf ("System status: %s\n", $mysqli->stat());
$mysqli->close();
?>
手続き型
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* 接続状況をチェックします */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
printf("System status: %s\n", mysqli_stat($link));
mysqli_close($link);
?>
上の例の出力は以下となります。
System status: Uptime: 272 Threads: 1 Questions: 5340 Slow queries: 0 Opens: 13 Flush tables: 1 Open tables: 0 Queries per second avg: 19.632 Memory in use: 8496K Max memory used: 8560K
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amosjohlong at hotmail dot com ¶
7 years ago
