如何动态地将SQL查询结果转换为多维数组？

Question

如何动态地将SQL查询结果转换为多维数组？

5

这是查询字符串。

$query = "SELECT t.id, t.assignee, t.owner, 
            d.code, d.status, d.target_completion_date, 
            d.target_extension_date, d.submission_date, d.approval_date,
            d.revision_start_date, d.revision_completion_date, d.message, 
            ty.name, f.orig_name, f.new_name, 
            b.payment_date, b.discount, b.total_cost, b.amount_payed, b.edit_level, 
            b.billing_type, b.pages, b.words
      FROM tasks t
      INNER JOIN details d ON t.detail_id = d.id
      INNER JOIN billing b ON t.billing_id = b.id
      INNER JOIN TYPE ty ON d.document_type_id = ty.id
      INNER JOIN files f ON t.file_id = f.id
      WHERE t.assignee = 'argie1234'";

以下是我想要查询结果转换成的数组。

$user = array('allTask'=>array(array('taskid' => 1,
                                     'assignee'=>'argie1234',
                     'owner'=>'austral1000',
                     'details' => array( 'code' => 'E',
                     'status'=>'TC',
                     'targetCompletionDateUTC'=>'1379401200',
                     'targetExtentionDateUTC'=>'1379401200',    
                     'submissionDateUTC'=>'1379401200',
                     'approvalDateUTC'=>'1379401200',
                     'revisionStartDateUTC'=>'1379401200',
                     'revisionCompletionDateUTC'=>'1379401200',
                     'messageToEditor'=>'Please work on it asap.',
                     'documentType' => 'Thesis'),
                     'file' => array('orig_name' =>'originalname.docx',
                                     'new_name' => 'newname.docx'),
                         'billing'=>array('paymentDate'=>'July 26,2013 12:40',
                          'discount' => '0',
                           'totalRevisionCharge' => '$20.00',
                          'totalAmountPayed' => '$20.00',
                          'revisionLevel' => '1',
                          'chargeType'=> '1',
                          'numPages' => '60',
                          'numWords' => '120,000' ) ),

                  array('taskid' => 12, 
                                  'assignee'=>'argie1234',
                                  'owner'=>'usaroberto',
                  'details' => array( 'code' => 'E',
                  'status'=>'TC',
                  'targetCompletionDateUTC'=>'1379401200',
                  'targetExtentionDateUTC'=>'1379401200',   
                  'submissionDateUTC'=>'1379401200',
                  'approvalDateUTC'=>'1379401200',
                  'revisionStartDateUTC'=>'1379401200',
                  'revisionCompletionDateUTC'=>'1379401200',
                  'messageToEditor'=>'Please work on it asap.',
                  'documentType' => 'Thesis'),
                  'file' => array('orig_name' => 'originalname.docx',
                                 'new_name' => 'newname.docx'),
                          'billing'=>array('paymentDate'=>'July 26,2013 12:40',
                           'discount' => '0',
                           'totalRevisionCharge' => '$20.00',
                           'totalAmountPayed' => '$20.00',
                           'revisionLevel' => '1',
                           'chargeType'=> '1',
                           'numPages' => '60',
                           'numWords' => '120,000' ) ),

    'account' => array( 'username' => 'marooon55',
            'emailadd' => 'marooon@yahoo.com',
            'firstname' => 'Maroon',
            'initial' => 'E',
            'lastname' => 'Young',
            'country' => 'Australia',
            'gender' => 'M',
            'password' =>'360e2801190744a2af74ef6cbfdb963078b59709',
            'activationDate' => '2013-09-13 14:30:34') );

我该如何创建上述数组？我知道如何定义多维数组，但遗憾的是，我很难动态创建这个复杂的数组。作为一个初学者，我甚至不知道从哪里开始。

- Kuya Noel

3个回答

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- Bryan · Answer 1

你可以像这里一样创建数组。我不会把整个东西都写出来，但是大概是这样的...

    $result = $mysqli->query($query); // however you query the db is up to you.
    $row = $result->fetch_assoc(); //same as query use your prefered method to fetch
    $user = array('allTask'=>array(array('taskid' => $row['id'],
                                 'assignee'=>$row['assignee'],
                 'owner'=>$row['owner'],
                 'details' => array( 'code' => $row['code'],
                 'status'=>$row['status'],

...等等，希望这对您有意义。

- Carsten Massmann · Answer 2

首先设置一个结构数组，定义哪些列将存储在子数组中，例如：

$struc=array('Id'->0, 'assignee'->0, 'owner'->0, 
            'code'->'detail', 'status'->'detail', 'target_completion_date'->'detail', 
            'target_extension_date'->'detail', 'submission_date'->'detail', 'approval_date'->'detail',
            'revision_start_date'->'detail', 'revision_completion_date'->'detail', 'message'->'detail', 
            'name'->'file', 'orig_name'->'file', 'new_name'->'file', 
            'payment_date'->'billing', 'discount'->'billing', 'total_cost'->'billing', 'amount_payed'->'billing', 'edit_level'->'billing', 'billing_type'->'billing', 'words');

在您的while ($a=mysqli_fetch_assoc($res))循环中，您现在可以使用此结构来决定是否要直接将元素存储在目标数组中，还是要将其放置在以此结构数组命名的子数组中。就像这样：

$res=mysqli_query($con,$sql);
$arr=array();
while($a=mysqli_fetch_assoc($res)) {
  // within result loop: $a is result from mysqli_fetch_assoc()
  $ta=array(); // temp array ...
  foreach ($a as $k => $v){
    if ($struc[$k]) $ta[struc[$k]][$k]=$v;
    else $ta[$k]=$v;
  }
  $arr[]=$ta;  // add to target array 
}

这是完整的代码，不需要更多了。它是在我的iPod上打出来的，因此尚未经过测试。

生成的数组应该等同于您的$user['allTask'] 数组。

- waka-waka-waka · Answer 3

这里有一个例子可能会帮助到你。试着从简单的多维数组开始，一旦你掌握了它，就可以转向构建复杂数组。然后你会发现你想要构建的数组并没有你最初想象中那么难。

$mycomplexarray = array('key1' => array('val1', 'val2'), 'key2' => array('val3', 'val4' => array('val5', 'val6') ) );