Question

您好我使用Codeigniter和MSSQL我连接了数据库及其工作，我需要使用模型控制器中的连接字符串。以下是我在数据库.php文件中给出的以下代码

出于测试目的，我在这个文件中给出了一个查询并且它正在工作

$db['default']['hostname'] = "Admin\SQLEXPRESS"; // or put the IP of your SQL Server Instance
$db['default']['port'] = 1433; // or the port you configured on step 6
$db['default']['username'] = '';
$db['default']['password'] = '';
$db['default']['database'] = 'db_name';
$db['default']['dbdriver'] = 'sqlsrv';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = FALSE; // Pay attention to this, codeigniter makes true for default
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;

$serverName = $db['default']['hostname']; //serverName\instanceName

 // Since UID and PWD are not specified in the $connectionInfo array,
 // The connection will be attempted using Windows Authentication.
 $connectionInfo = array( 'Database' => $db['default']['database']);
 $conn = sqlsrv_connect( $serverName, $connectionInfo );

 if ($conn)
 {
      $sql="SELECT * from dbo.LAYER";
      $stmt = sqlsrv_query($conn,$sql);

     while( $row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC) ) 
      {
      $result_array[] = $row;
      }
      print("<pre>");
      print_r($result_array);
      exit;   


 }
 else 
{
  echo "Connection could not be established.<br />";
  die ( print_r( sqlsrv_errors(), true));
 }

在模型中我尝试了这个但它不起作用

class welcome_m extends CI_Model{

    function __construct()
    {       
        parent::__construct();
        $this->load->database('default',true);           
    }
    function welcome_check()
    {
      $sql="SELECT * from dbo.LAYER";
      $stmt = $this->db->sqlsrv_query($sql);
     while( $row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC) ) 
      {
      $result_array[] = $row;
      }
      print("<pre>");
      print_r($result_array);
      exit;
   }

这是模型文件。如何调用模型内的数据库连接谢谢

Answer 1

我正在查看它在加载数据库时所说的Codeigniter文档，它会像......但是不要用力尝试！：

protected $MyMSSQL;

function __construct()
    {       
        parent::__construct();
        $this->MyMSSQL = $this->load->database('default',true);           
    }

function welcome_check()
    {
        $db    =    $this->MyMSSQL;
        $stmt  =    $db->query("SELECT * from dbo.LAYER");
        while($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC)) {
                $result_array[] = $row;
            }

        print("<pre>");
        print_r($result_array);
        exit;
    }

Answer 2

经过大量的讨论后，我能够在我的代码（模型）中连接SQL Server，下面是我的数据库文件和模型中的示例函数：

我正在从我的模型中添加一个示例函数：

public function getCommandFields($name)
    {
        // Load Sql Server Connection

        $this->sqlsrvr = $this->load->database('test', true);

        $qry ="select  SPECIFIC_NAME, ORDINAL_POSITION, PARAMETER_NAME, DATA_TYPE, 
        CHARACTER_MAXIMUM_LENGTH,PARAMETER_MODE 
FROM INFORMATION_SCHEMA.Parameters
WHERE SPECIFIC_NAME  ='".$name."'";


         $query = $this->sqlsrvr->query($qry);
         $fields = array();
         foreach ($query->result_array() as $row)
        {
            $fields[]=  $row;
        }

        return $fields;

    }

数据库文件

$db['test']['hostname'] = "192.168.12.123";
$db['test']['username'] = "sa";
$db['test']['password'] = "password";
$db['test']['database'] = "Hospital";
$db['test']['dbdriver'] = "sqlsrv";
$db['test']['dbprefix'] = "";
$db['test']['pconnect'] = FALSE;
$db['test']['db_debug'] = FALSE;
$db['test']['cache_on'] = FALSE;
$db['test']['cachedir'] = "";
$db['test']['char_set'] = "utf8";
$db['test']['dbcollat'] = "utf8_general_ci";
$db['test']['swap_pre'] = "";
$db['test']['autoinit'] = TRUE;
$db['test']['stricton'] = FALSE;

如何在模型中执行sqlsrv_query？如何调用模型内的数据库连接？

2 个答案: