MVC中的嵌套php foreach

Question

我有一个简单的PHP MVC概念，在控制器中进行一些嵌套的foreach循环。

在这种情况下，只执行了一个嵌套的foreach，另一个被忽略。在这种情况下，这是嵌套的正确方法吗？

控制器：

$positions = $this->positionModel->getOrderPositionsById($id);
foreach($positions as &$o) {
  $o->measure = $this->positionModel->listMeasuresTable($o->id);
    foreach($o->measure as &$o) {
      $o->measurep = $this->positionModel->getMeasureNamesById($o->measurep);
    }
    foreach($o->measure as &$o) {
      $o->measurec = $this->positionModel->getMeasureNamesById($o->measurec);
    } 
}

查看：

foreach($position->measure as $k => $m){
    $html.= '
    <tr nobr="true" style="padding:5px;">
        <th style="padding:5px;"><b>'._releaseSuS1.'</b></th>
        <th style="padding:5px;">';
        foreach($m->measurep as $k => $m){
            $html.= $m->content;
         }  
        $html.= '</th>
        <th style="padding:5px;">';
        foreach($m->measurec as $k => $m){
            $html.= $m->content;
         }
        $html.= '</th>
    </tr>
    ';
}

模型： public函数getOrderPositionsById（$ id）{ $ this-> db-> execute（）;

      $this->db->query('
      SELECT 
          ' . $this->table_name . '.id,
          ' . $this->table_name . '.last_o_id,
          ' . $this->table_name . '.last_mod,
          ' . $this->table_name . '.uid,  
          ' . $this->table_name . '.comp_id,
          ' . $this->table_name . '.order_id,
          ' . $this->table_name . '.position,
         .....
          FROM ' . $this->table_name . '
          WHERE 
          ' . $this->table_name . '.order_id = :id
          ');
          $this->db->bind(':id', $id);
          $this->db->bind(':session_id', $session_id);
          $results = $this->db->resultSet();
          return $results;
    }
 public function listMeasuresTable($id){
      $company_id = $_SESSION['company_id'];
      $this->db->query('
      SELECT 
        measure_list.id,
        measure_list.positionid,
        measure_list.p_company,
        measure_list.measurep,
        measure_list.measurec,
        measure_list.user_id,
        measure_list.modified,
        measure_list.created
      FROM 
        measure_list
      WHERE 
        measure_list.positionid = :positionid
      ORDER BY
        id DESC
      ');
      $this->db->bind(':positionid', $id);
      $results = $this->db->resultSet();
      return $results;
    }
 public function getMeasureNamesById($id){
      $this->db->query('
      SELECT 
        id,
        keynr,
        content
      FROM 
        measure
      WHERE 
        id = :id
      ');
      $this->db->bind(':id', $id);
      return $this->db->resultSet();
    }

Answer 1

请尝试使用不同的变量名称。在您的代码中，您使用相同的变量名称=>＆amp; $ O（在控制器中）和$ m（视图）

foreach($position->measure as $parentkey => $parentValue){
$html.= '
<tr nobr="true" style="padding:5px;">
    <th style="padding:5px;"><b>'._releaseSuS1.'</b></th>
    <th style="padding:5px;">';
    foreach($parentValue->measurep as $childKey1 => $childValue1){
        $html.= $childValue1->content;
     }  
    $html.= '</th>
    <th style="padding:5px;">';
    foreach($parentValue->measurec as $childKey2 => $childValue2){
        $html.= $childValue2->content;
     }
    $html.= '</th>
</tr>
';

}