Description:
------------
Hi,

Could you add a (MySQL) query logger? It'd log each query, including the duration and number of rows affected. This is very useful to diagnose slow pages.

See below for an idea of what interface could be provided.

Reproduce code:
---------------
mysql_log_queries(true);
mysql_query("select * from T");
$a = mysql_get_log();
foreach ($a as $row)
{
    printf("%.1f ms - %d rows - %s", $row['duration'], $row['affected_rows'], htmlspecialchars($row['query']));
}

Expected result:
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-

Actual result:
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-