Question

我同时遇到来自同一连接的2个选择数据库的问题，代码是：

@$dbmssSQLGestasa_conn = mssql_connect($servidor, $usuario, $contra);
if(!$dbmssSQLGestasa_conn){
        header("Location:nobase.php");
        exit();
     }

mssql_select_db('GESTASA', $dbmssSQLGestasa_conn);

其他连接的代码：

@$dbmssSQLTasa_conn = mssql_connect($servidor, $usuario, $contra);
     if(!$dbmssSQLTasa_conn){
        header("Location:nobase.php");
        exit();
     }

//Apertura de la base de datos
mssql_select_db('TASA', $dbmssSQLTasa_conn);

它不起作用并给我错误“（严重性16）”。

是否可以在同一连接mssql中进行2个或更多选择数据库？

Answer 1

不要使用mysql_select_db（）;

在Mysqli：

$servername = "localhost";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
     die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM test123.posts";  // databse.tablename
$result = $conn->query($sql);

if ($result->num_rows > 0) {
     // output data of each row
     while($row = $result->fetch_assoc()) {
            $mack[] = $row;     
     }
}

$sql1 = "SELECT * FROM portal.abouts";  // databse.tablename
$result1 = $conn->query($sql1);

if ($result1->num_rows > 0) {
     // output data of each row
     while($row1 = $result1->fetch_assoc()) {
            $mack1[] = $row1;     
     }
}
echo "<pre>";
print_r($mack);
print_r($mack1);
echo "</pre>";
$conn->close();

Answer 2

您可以使用“下方代码”轻松地同时使用2个数据库我使用变量作为大写词但你可以使用自己的变量词。

<?php
  define('HOST', "YOURHOSTNAME");
  define('USER', "YOURHOSTNAME");
  define('PASS', "YOURHOSTNAME");
  define('DATABASE1', "NAMEOFDATABASE1");
  define('DATABASE2', "NAMEOFDATABASE2");

  $DATABASE1  = mysqli_connect(HOST, USER, PASS, DATABASE1);
  $DATABASE2  = mysqli_connect(HOST, USER, PASS, DATABASE2);
  if(!$DATABASE1){
      die("DATABASE1 CONNECTION ERROR: ".mysqli_connect_error());
   }
  if(!$DATABASE2){
      die("DATABASE2 CONNECTION ERROR: ".mysqli_connect_error());
   }


   $sql = "SELECT * FROM TABLE";   /* You can use your own query */

   $DATABASE1_QUERY = mysqli_query($DATABASE1, $sql);
   $DATABASE2_QUERY = mysqli_query($DATABASE2, $sql);

   $DATABASE1_RESULT = mysqli_fetch_assoc($DATABASE1_QUERY);
   $DATABASE2_RESULT = mysqli_fetch_assoc($DATABASE2_QUERY);

   /* SHOW YOUR RESULT HERE WHICH DATABASE YOU WANT FROM */
   echo  $DATABASE1_RESULT['id'];
   echo  $DATABASE2_RESULT['id'];


  /*After complete your all work don't forgot about close database connections*/
  mysqli_close($DATABASE1);
  mysqli_close($DATABASE2);
      ?>

是否可以在同一个连接中同时选择数据库2

2 个答案: