来自多维数组的php动态表

Question

你能告诉我如何为“动态”html 表实现这个想法吗？ 我有一个数组

$arr = array(
  array(
       'label' => 'First name',
       'data' => array(
           array('fname' => 'John'),
           array('fname' => 'Ralph'),
       ),
  ),
  array(
       'label' => 'Last name',
       'data' => array(
           array('lname' => 'Doe'),
           array('lname' => 'Loren'),
       ),
  ),
  array(
       'label' => 'Description',
       'data' => array(
           array('description' => 'Something bout John'),
           array('description' => 'Something about Ralph'),
       ),
  ),
);

现在从键“标签”即时创建表格列

---------------------------------------
|First Name | Last Name | Description |
---------------------------------------

问题是如何将“fname”键放在第一列，“lname”放在第二列，“description”放在第三列。

通过这部分代码，我试图将数据放在所有列中

    private function tableBody()
{
    $data = $this->data;
    $table = '<tbody>';

    foreach($data as $key => $value){
        foreach($value['data'] as $k => $v){
            $table .= '<tr>';
            foreach($v as $col => $name){
                $table .= '<td>' . $name . '</td>';
            }
            $table .= '</tr>';
        }
    }

    $table .= '</tbody>';

    return $table;
}

另外我的想法不是硬编码数组键以供多次使用（标签和数据除外）。

Answer 1

首先我会重新映射数据以循环处理它。

$labels = [];
$rows = [];
foreach($arr as $column) {
    $label = $column['label'];
    $labels[] = $label;
    foreach($column['data'] as $key => $value) {
        $rows[$label][] = $value;
    }
}

现在打印出带有标题的标签。

echo "<table>\n";
echo "<tr>";
foreach($labels as $label) echo "<th>{$label}</th>";
echo "</tr>\n";

遍历行并创建 HTML。

$labelCount = count($labels);
$rowCount = count($rows[$labels[0]]);

while($rowCount) {
    echo "<tr>";
    for ($i = 0; $i < $labelCount; $i++) {
        $current = array_shift($rows[$labels[$i]]);
        $value = reset($current);
        echo "<td>{$value}</td>";
    }
    echo "</tr>\n";
    $rowCount--;
}
echo "</table>\n";

这给出了如下表

<table>
<tr><th>First name</th><th>Last name</th><th>Description</th></tr>
<tr><td>John</td><td>Doe</td><td>Something bout John</td></tr>
<tr><td>Ralph</td><td>Loren</td><td>Something about Ralph</td></tr>
</table>

Answer 2

您需要操纵初始数组以将其减少到更易于管理的状态。你可以像这样暴力破解：

  function reduce($data) {
      $ret = [];
      foreach ($data as $d1) {
          // column header could have been fetched here
          foreach ($d1 as $k2 => $d2) {
            // keeping track of what label we need
            $key = '';
            // keeping the values together
            $child = [];
              // discarding non arrays
              if (is_array($d2)) {
                  foreach ($d2 as $d3) {
                      // identifier fetch from this level
                      foreach ($d3 as $k4 => $d4) {
                        $key = $k4;
                        $child[] = $d4;
                      }
                  }
              }
              // assigning back to the main array only if we have something
              if (!empty($child)) {
                $ret[$key] = $child;
              }
          }
      }

      return $ret;
  }

这将返回以下内容：

Array
(
    [fname] => Array
        (
            [0] => John
            [1] => Ralph
        )

    [lname] => Array
        (
            [0] => Doe
            [1] => Loren
        )

    [description] => Array
        (
            [0] => Something bout John
            [1] => Something about Ralph
        )

)