PHP MYSQL PDO getColumnMeta

Question

对不起我的英文不好我讲法语通常:)

目前我使用的MySQLi和我尝试我所有的MySQLi转化为PDO。

中的MySQLi

我有这样的代码，它做工非常精细：

// connection string in MySQLi 

if ($query = $connection->prepare("SELECT u.ID as ID, 
              u.Username as Username, 
              u.Firstname as Firstname, 
              u.Lastname as Lastname, 
              // ... many more 
            FROM Users u 
           INNER JOIN Gender g ON u.Gender = g.id 
              // ... many more 
            WHERE u.ID = ?")) { 

       $query->bind_param('s', $_SESSION['ID']); 
       $query->execute(); 
       $metaResults = $query->result_metadata(); 
       $fields = $metaResults->fetch_fields(); 
       $statementParams = ''; 

       foreach ($fields as $field) { 
        if (empty($statementParams)) { 
         $statementParams.="\$column['" . $field->name . "']"; 
        } else { 
         $statementParams.=", \$column['" . $field->name . "']"; 
        } 
       } 

       $statment = "\$query->bind_result($statementParams);"; 

       eval($statment); 
       $query->store_result(); 

       $affected = $query->num_rows; 
       // this request return me only ONE row 

       if ($affected == 1) { 
        while ($query->fetch()) { 
         foreach ($column as $key => $value) { 
          if ($key == "lookingFor") { 
           $row_tmb[$key] = formatLookingFor($value, $language, ""); 
          } else { 
           $row_tmb[$key] = utf8_encode($value); 
           $row_tmb[$key] = $value; 
          } 
         } 

         $results[] = $row_tmb; 
        } 

        $query->free_result(); 
        $query->close(); 

        $profileData = $results[0]; 
// ... other code  
} 

这是回归到我所有的列名和全1个数据行，我很高兴柠。所以，我尝试这种代码转换为PDO的新PDO代码：

// good connection string without error in PDO code and the same query as you see up. 
      if ($query = $connection->prepare($sql)) { 
       $query->execute(); 
       $metaResultsColNumber = $query->columnCount(); 

       for ($i = 0; $i < $metaResultsColNumber; $i++) { 
        $metaResults[] = $query->getColumnMeta($i, ['name']); 
       } 
       var_dump($metaResults); 

       $fields = $metaResults->fetchColumn(); 
       var_dump($fields); 
       $statementParams = ''; 

       foreach ($fields as $field) { 
        if (empty($statementParams)) { 
         $statementParams.="\$column['" . $field->name . "']"; 
        } else { 
         $statementParams.=", \$column['" . $field->name . "']"; 
        } 
       } 
       $statment = "\$query->bind_result($statementParams);"; 

       eval($statment); 
       $query->store_result(); 

       $affected = $query->num_rows; 

       // TRACE 
       printf("SQL %d row(s) return", $affected); 

       if ($affected == 1) { 
        while ($query->fetch()) { 
         foreach ($column as $key => $value) { 
          if ($key == "lookingFor") { 
           $row_tmb[$key] = formatLookingFor($value, $language, ""); 
          } else { 
           $row_tmb[$key] = utf8_encode($value); 
          } 
         } 

         $results[] = $row_tmb; 
        } 

        $query->free_result(); 
        $query->close(); 

        $profileData = $results[0]; 

，我无法获得1）右侧的列名2）返回行

我尝试读取数据从很多小时帮助到这个网站和PHP MYSQL PDO文档。

非常感谢您的帮助！

Answer 1

你是否在寻找类似的东西？

//Datastrucure 
include("pdo_dbconnect.php"); 
$stmt = $db->prepare('select * from information_schema.columns where table_name = "' . $_SESSION[$fenster .'_tabelle'] . '" and table_schema = "' .$database.'"'); 
$stmt->execute(); 

$f = -1; 
while ($data = $stmt->fetch()) { 
    $f += 1; 
    //pmsg($data['COLUMN_NAME'] . ' ' .$data['DATA_TYPE'] . ' ' . $data['CHARACTER_MAXIMUM_LENGTH']); 
    $_SESSION['_fieldName'][$f] = $data['COLUMN_NAME']; 
    $_SESSION['_fieldLenght'][$f] = $data['CHARACTER_MAXIMUM_LENGTH']; 
    $_SESSION['_extra'][$f] = $data['EXTRA']; 
}