有效地计算php中返回的结果

Question

使用的技术：php通过PDO访问MySQL。

我有以下查询：

    try {
        $stmt = $conn->prepare("SELECT * FROM $database.appsLodged WHERE `uID` = :uid");
        $stmt->bindValue(':uid', $uid);
        $stmt->execute();
        $result = $stmt->fetchAll();
    } catch(PDOException $e) { catchMySQLerror($e->getMessage()); }

这是相当简单的。 目前，相关数据库中有7行，每行可能为$ result [0] [5]返回不同的字符串值。 我希望能够计算出有$ result [0] [5]为“鞋子和袜子”的结果有多少，然后有$ result [0] [5]为“靴子和裙子”的结果为多少以及有多少个具有$结果[0] [5]的“跳线和开襟衫”-无需诉诸多个数据库查询（我知道我们可以通过添加其他“ AND item =：item”语法和绑定来做到这一点：item为“鞋子和袜子”，但这似乎非常重复且不必要。

请提出建议，一切欢迎！ :)

C

按照下面的要求，这是列出的$ result数组：

Array
(
[0] => Array
    (
        [id] => 1
        [0] => 1
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Pending
        [5] => Pending
        [dateStarted] => 1421773018
        [6] => 1421773018
        [lastModified] => 1421773018
        [7] => 1421773018
    )

[1] => Array
    (
        [id] => 2
        [0] => 2
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1421774389
        [6] => 1421774389
        [lastModified] => 1421774389
        [7] => 1421774389
    )

[2] => Array
    (
        [id] => 3
        [0] => 3
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1421776146
        [6] => 1421776146
        [lastModified] => 1421776146
        [7] => 1421776146
    )

[3] => Array
    (
        [id] => 4
        [0] => 4
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1421777460
        [6] => 1421777460
        [lastModified] => 1421777460
        [7] => 1421777460
    )

[4] => Array
    (
        [id] => 5
        [0] => 5
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1421781756
        [6] => 1421781756
        [lastModified] => 1421781756
        [7] => 1421781756
    )

[5] => Array
    (
        [id] => 6
        [0] => 6
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422213946
        [6] => 1422213946
        [lastModified] => 1422213946
        [7] => 1422213946
    )

[6] => Array
    (
        [id] => 7
        [0] => 7
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422238026
        [6] => 1422238026
        [lastModified] => 1422238026
        [7] => 1422238026
    )

[7] => Array
    (
        [id] => 8
        [0] => 8
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422369458
        [6] => 1422369458
        [lastModified] => 1422369458
        [7] => 1422369458
    )

[8] => Array
    (
        [id] => 9
        [0] => 9
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422369473
        [6] => 1422369473
        [lastModified] => 1422369473
        [7] => 1422369473
    )

[9] => Array
    (
        [id] => 10
        [0] => 10
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422371233
        [6] => 1422371233
        [lastModified] => 1422371233
        [7] => 1422371233
    )

[10] => Array
    (
        [id] => 11
        [0] => 11
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422371291
        [6] => 1422371291
        [lastModified] => 1422371291
        [7] => 1422371291
    )

[11] => Array
    (
        [id] => 12
        [0] => 12
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422372793
        [6] => 1422372793
        [lastModified] => 1422372793
        [7] => 1422372793
    )

[12] => Array
    (
        [id] => 13
        [0] => 13
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422373414
        [6] => 1422373414
        [lastModified] => 1422373414
        [7] => 1422373414
    )

[13] => Array
    (
        [id] => 14
        [0] => 14
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422373681
        [6] => 1422373681
        [lastModified] => 1422373681
        [7] => 1422373681
    )

[14] => Array
    (
        [id] => 15
        [0] => 15
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422373927
        [6] => 1422373927
        [lastModified] => 1422373927
        [7] => 1422373927
    )

[15] => Array
    (
        [id] => 16
        [0] => 16
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422374004
        [6] => 1422374004
        [lastModified] => 1422374004
        [7] => 1422374004
    )

[16] => Array
    (
        [id] => 17
        [0] => 17
        [appID] => 4
        [1] => 4
        [applicationKey] => ConSupAp
        [2] => ConSupAp
        [applicationName] => Conference Support Application
        [3] => Conference Support Application
        [uID] => 1
        [4] => 1
        [status] => Data Acquisition
        [5] => Data Acquisition
        [dateStarted] => 1422374587
        [6] => 1422374587
        [lastModified] => 1422374587
        [7] => 1422374587
    )

)

重要的是要记住-实际上，我想对“状态”列进行计数，除第一个示例外，所有这些示例的“状态”列均设置为“数据采集”。 第一个设置为“待处理”。 可能还有另外三个值，如果当时这些值不在数据库中，则我需要为它们提供零计数，以便用户知道将零数据设置为其他可能的“状态”设置。

Answer 1

我建议您执行以下操作：首先，从数据库中获取所有这些字符串，因此您将拥有类似$result[0][5] ， $result[1][5] ， $result[2][5] ，依此类推，然后将它们foreach()匹配，并在不同的变量中匹配字符串，对于每个要匹配的字符串，一个...我想根据您在查询中所说的，每个uID都有一种字符串位于[5]位置。 在女巫的情况下，我建议您有一个id的字符串，因此您的查询将如下所示：

$uid = '1,2,3,4,5'; // for example
$stmt = $conn->prepare("SELECT * FROM $database.appsLodged WHERE `uID` IN (:uid)");

$stmt->bindValue(':uid', $uid);

您可能需要一个额外的查询来获取所有这些ID，仅此而已：D

希望这可以帮助！