将数组插入 mysql (userCake)

insert array into mysql (userCake)

我正在用 userCake 源代码建立一个网站。此时此刻,我有一个数组要插入到我的 MySQL 数据库中。

我从表单中获取数组的数据。这是构建数组的代码:

$pauzes = array();
    foreach($users as $usr)
    {
      $pauzes = array_merge($pauzes, array(
        $usr['username'] => $_POST[$usr['username']]));
    }

当我在这段代码之后调用 print_r($pauzes) 时,可能的输出可能是:

Array ( [jules] => 12.30-13.00 [marc] => 12.30-13.00 [nick] => 13.30-14.00 [paulo] => --- [kevin] => --- [rick] => --- [sanam] => --- [yvette] => --- [bas] => --- [bruce] => --- )

('---'表示没有选择时间)

userCake 的工作方式我将不得不使用 bind_param,但我无法发送数组 (???) 我找到了一些代码如何从数组中获取数据,所以输出应该类似于 username-time

这是将数据写入数据库的函数:

function add_pauze($datum, $pauzes)
{
    GLOBAL $mysqli, $db_table_prefix;

    // array $pauzes opdelen in aparte stukken zodat deze kan worden opgeslagen in de database
    if(is_array($pauzes))
    {
        $data = array();
        foreach($pauzes as $row){
                $naam = mysqli_real_escape_string($mysqli,$row['username']);
                $tijd = mysqli_real_escape_string($mysqli, $row['tijd'] );
                $data[] = "($naam', '$tijd')";
        }
    }
    $stmt = $mysqli->prepare("INSERT INTO " . $db_table_prefix . "pauzes
                                                        (
                                                        datum,
                                                        gegevens
                                                        )
                                                        VALUES
                                                        " . implode(',', $data) ."
                                                        ");
    $stmt->bind_param("ss", $datum, $naam, $tijd);
    $result = $stmt->execute();
    $stmt->close();
    return($result);
}

当我现在尝试插入数据时,我收到了几个关于非法字符串偏移的警告。我相信这是因为 $naam ($row['username']) 和 $tijd ($row['tijd']) 没有在数组中定义?

我尝试将构建数组的代码更改为如下内容:

$pauzes = array();
    foreach($users as $usr)
    {
      $pauzes = array_merge($pauzes, array(
        "username" => $usr['username'] , "tijd" => $_POST[$usr['username']]));
    }

但是我的数组不再正确了:

Array ( [username] => bruce [tijd] => --- )

所以现在我想知道如何将我的数组(右边的一个在这个 post 之上)插入我的数据库。

提前致谢!

--- 更新信息 ---

我更改了构建数组的代码:

$pauzes = array("user" => array(), "pauze" => array());
    foreach($users as $usr)
    {
      array_push($pauzes['user'], $usr['username']);
      array_push($pauzes['pauze'], $_POST[$usr['id']]);

    }

当我执行 print_r($pauzes) 时,输出是:

Array ( [user] => Array ( [0] => jules [1] => marc [2] => nick [3] => paulo [4] => kevin [5] => rick [6] => sanam [7] => yvette [8] => bas [9] => bruce ) [pauze] => Array ( [0] => 13.30-14.00 [1] => --- [2] => --- [3] => 13.00-13.30 [4] => --- [5] => 12.00-12.30 [6] => --- [7] => --- [8] => --- [9] => --- ) )

函数 add_pauze 已更新,如下所示:

function add_pauze($datum, $pauzes)
{
    GLOBAL $mysqli, $db_table_prefix;

    // array $pauzes opdelen in aparte stukken zodat deze kan worden opgeslagen in de database
    if(is_array($pauzes))
    {
        $data = array();
        foreach($pauzes as $row){
                $naam = $row['user'];
                $tijd =  $row['pauze'];
                $data[] = "('$naam', '$tijd')";
        }
    }
    $stmt = $mysqli->prepare("INSERT INTO " . $db_table_prefix . "pauzes
                                                        (
                                                        datum,
                                                        naam,
                                                        tijd
                                                        )
                                                        VALUES
                                                        " . implode(',', $data) ."
                                                        ");

    $stmt->bind_param("ss", $datum, $naam, $tijd);
    $result = $stmt->execute();
    $stmt->close();
    return($result);
}

当我在这个函数中回显 sql 语句时,输出是:

INSERT INTO applepauzes ( datum, naam, tijd ) VALUES ('', ''),('', '')

这是因为 userpauze 索引未识别。

我在数据库中的 table applepauzes 列是:

  1. id
  2. 数据
  3. 纳姆
  4. tijd

in naam 需要存储用户名。 tijd 休息时间(暂停)需要存储。

如评论中所述,当我执行 print_r($datum) 时,输出为:

2015-02-21 (current date when writing)

我解决了我的问题。

我将构建数组的代码更改为:

$pauze_users = array("users" => array());
$pauze_tijd = array("tijd" => array());
foreach($users as $usr)
{
  array_push($pauze_users, $usr['username']);
  array_push($pauze_tijd, $_POST[$usr['id']]);

}

之后,我确保数据是正确的,并使用以下代码将其放入 SQL 语句中:

$count_users = count($pauze_users);
$sql;
                for($i = 0; $i < $count_users; $i++)
                {
                    $sql .= "(" . $datum . ", " . $pauze_users[$i] . ", " . $pauze_tijd[$i] . ") ";     
        }

使用这段代码,我将得到如下输出:

(2015-02-22, jules, 11.30-12.00) (2015-02-22, marc, 12.30-13.00) (2015-02-22, nick, ---) (2015-02-22, paulo, 12.00-12.30) (2015-02-22, kevin, ---) (2015-02-22, rick, ---) (2015-02-22, sanam, ---) (2015-02-22, yvette, ---) (2015-02-22, bas, ---) (2015-02-22, bruce, ---)

(我知道我需要在数据之间放置 << , >> 以使其可以接受 SQL

感谢您帮助我解决了问题!

好的,首先您使用的是准备好的语句,但错误地绑定了您的值。你给 mysqli::prepare 的 sql 应该是这样的:

INSERT INTO applepauzes (datum, naam, tijd) VALUES (?,?,?)

对每个用户重复 (?,?,?)。然后使用 mysqli::bind_param 将数据绑定到这些值。不幸的是 mysqli::bind_param 让你一次绑定它们并接受可变数量的参数 - 每个要绑定的参数一个,而且它们必须通过引用,这使得它更加烦人。

因此,让我们获取您的数据...为了 运行 SQL 语句,我们最终需要的是一个如下所示的数组:

Array(
  0 => '2015-02-21',
  1 => 'juels',
  2 => '12.30-13.00',
  3 => '2015-02-21',
  4 => 'marc',
  5 => '12.30-1:00'
  // repeat for each user in the same order
)

然而,为了正确地制作查询,我们需要组织如下内容:

Array (
   0 => array(
      0 => '2015-02-21',
      1 => 'juels',
      2 => '12.30-13.00'
   ),
   1 => array(
      3 => '2015-02-21',
      4 => 'marc',
      5 => '12.30-1:00'
   ),
   // repeat for every user record
)

我假设 $_POST 看起来像:

Array(
   'juels' => '12.30-13.00',
   'marc' => '12.30-13.00',
   // etc
)

所以我们需要做的第一件事就是妥善组织:

$pauzes = array();
foreach ($users as $u) {
   $username = $u['username'];
   // if a user has an entry in the Form then add it to 
   // $pauzes array for insert into the DB
   if (isset($_POST[$username]) {
      // even though we want numeric keys eventually we
      // we will use the field names here so that its not ambiguous
      // later and we can easily reroder them
      $pauzes[] = array(
          'naam' => $username,
          'tijd' => $_POST[$username]
      )
   }
}

// call out function
add_pauzes(date('Y-m-d'), $pauzes);

所以现在我们进入了问题的核心...... mysqli 的实际插入:

// add an array typehint so that the function
// only takes an array
function add_pauze($datum, array $pauzes)
{
    GLOBAL $mysqli, $db_table_prefix;

    // first we need to prepare our base array structure
    $records = array();
    $params = array();

    foreach ($pauzes as $pauze) {
        $prefix = $pauze['username'];
        // give the items unique keys so we can reference them 
        // in the flat array $params
        $records[$prefix] = array(

           $prefix . 'datum' => $datum,
           $prefix . 'naam' => $pauze['username'],
           $prefix . 'tijd' => $pauze['tijd']
        );


        $params = array_merge($params, $records[$prefix]);
    }

    print_r($params);

    // get our total number of records for insertion
    // eg. each array in $records represents a set of values
    // for a db record in the table
    $recordCount = count($records);

    // create placeholders (?,?,?), one for each $record element
    $placeholders = array_fill(0, $recordCount, '(?,?,?)');

    // create the SQL string for our insert using
    // sprintf will substitute our the %s for the other arguments
    // we give it...    
    $sql = sprintf(
        'INSERT INTO %spauzes (datum, naam, tijd) VALUES %s',   
        $db_table_prefix,
        implode(',', $placeholders)
    );

    // prepare out statmement
    $stmt = $mysqli->prepare($sql);


    // we have to use references to bind the params
    // and to make it easy we want to do so with call_user_func_array
    // so setablish an array of arguemnts the first being th param
    // type and then so loop over $params and assign the values to
    // $args by reference
    $args = array(str_repeat('s', count($params)));
    foreach ($params as $k => &$v) {
        $args[$k] = &$v;
    }

    // bind all of our params using a callable and an array
    // of arguments to be passed into that callable
    call_user_func_array(array($stmt, 'bind_param'), $args);


    $result = $stmt->execute();
    $stmt->close();

    return $result;
}

如果您只是想将一个数组(或任何任意 PHP 结构)插入到 MySQL table 中并能够将其取回,请考虑以下事项。注意:您将无法通过 SQL 语句轻松检查任何数组元素。

将此添加到您的 table:

json TEXT NOT NULL COMMENT 'opaque array of stuff'

使用 json_encode($array) 将数组转换为字符串,然后将该字符串插入 json 列。

json 列选择到 $json 后,执行此操作以取回数组:

$array = json_decode($json, true);