讓MySQL的PHP​​代碼和MsSQL一起工作

Question

我們已經有一個由一羣學生開發的項目，作爲他們碩士學位最終項目的一部分。整體解決方案效果很好，不幸的是它是爲MySQL數據庫開發的，我們正在使用MsSQL服務器數據庫。

我一直在努力工作，等待讓它工作，但我沒有真正得到任何地方。在本地機器上，我使用PHP 5.3.29和Sql Server 2012運行Apache服務器。

來自phpinfo（）的信息; Apache的版本的Apache/2.2.25（的Win32）PHP/29年3月5日 我看不到MSSQL提及在phpinfo（）函數，但在php.ini中我有以下幾點：

[MSSQL] 
; Allow or prevent persistent links. 
mssql.allow_persistent = On 

; Maximum number of persistent links. -1 means no limit. 
mssql.max_persistent = -1 

; Maximum number of links (persistent+non persistent). -1 means no limit. 
mssql.max_links = -1 

; Minimum error severity to display. 
mssql.min_error_severity = 10 

; Minimum message severity to display. 
mssql.min_message_severity = 10 

; Compatibility mode with old versions of PHP 3.0. 
mssql.compatability_mode = Off 

; Connect timeout 
;mssql.connect_timeout = 5 

; Query timeout 
;mssql.timeout = 60 

; Valid range 0 - 2147483647. Default = 4096. 
;mssql.textlimit = 4096 

; Valid range 0 - 2147483647. Default = 4096. 
;mssql.textsize = 4096 

; Limits the number of records in each batch. 0 = all records in one batch. 
;mssql.batchsize = 0 

; Specify how datetime and datetim4 columns are returned 
; On => Returns data converted to SQL server settings 
; Off => Returns values as YYYY-MM-DD hh:mm:ss 
;mssql.datetimeconvert = On 

; Use NT authentication when connecting to the server 
mssql.secure_connection = On 

; Specify max number of processes. -1 = library default 
; msdlib defaults to 25 
; FreeTDS defaults to 4096 
;mssql.max_procs = -1 

; Specify client character set. 
; If empty or not set the client charset from freetds.conf is used 
; This is only used when compiled with FreeTDS 
;mssql.charset = "ISO-8859-1" 

我有試過如下： dbconnect.php

$myServer = "localhost"; 
$myUser = "sa"; 
$myPass = "sa123"; 
$myDB = "st"; 

//connection to the database 
$dbhandle = mssql_connect($myServer, $myUser, $myPass) 
    or die("Couldn't connect to SQL Server on $myServer"); 

die(); 
    $selected = mssql_select_db($myDB, $dbhandle) 
    or die("Couldn't open database $myDB"); 

我第一次試圖讓系統甚至讓我登錄，這樣的login.php代碼如下。我修改了查詢MSSQL：

<?php 
error_reporting(E_ALL); 
session_start(); // Starting Session 
require("includes/db_connect.php"); 
$hint = ""; 
$username=$_POST["username"]; 
$password=$_POST["password"]; 
/*============================================================= 
        SQL INJECTION PREVENTION 
===============================================================*/ 
$PRElist = array(); 
$PREsql = "SELECT Username, Password FROM tblUsers ;"; 
$PREresult = mssql_query($PREsql); 
//if (mysqli_num_rows($PREresult)>0) 
if (1 == 1){ 
    // output data of each row 
    while($row = mssql_fetch_assoc($PREresult)) { 
     $PRElist[]= strtolower($row['Username']); 
     $PRElist[strtolower($row['Username'])]=$row['Password']; 
    } 
}//to prevent sql injection 
//=======================START LOOKING UP THE USER================== 
if ((in_array(strtolower($username), $PRElist))&&($PRElist[strtolower($username)]==$password)) 
    { 
     $sql = "SELECT UserId, Username, Password FROM tblUsers where Username='$username' AND Password='$password'"; 
     $result = mssql_query($sql); 
     $numRows = mssql_num_rows($result); 
     if ($numRows > 0) { 
      // output data of each row 
      while($row = mssql_fetch_assoc($result)) { 
       $hint="";     //initialize the hint string.. 
       if (strtolower($username)==strtolower($row["Username"])){ 
        $userID= $row["UserId"]; 
        $sql = "SELECT GroupId FROM tblUserGroups where UserId='$userID'"; 
        $result = mssql_query($sql); 
        $numRows1 = mssql_num_rows($result); 
        if ($numRows1 > 0) { 
         // output data of each row 
         while($row = mssql_fetch_assoc($result)) { 
          switch ($row["GroupId"]) { 
           case '1': 
             header("location: home.php"); // Redirecting To Other Page 
             $hint="<span style='color:green'> This username is registered </span>"; 
             $_SESSION['login_user']=$username; // Initializing Session 
             $_SESSION['login_pass']=$password; // Initializing Session# code... 
             $_SESSION['userID']=$userID; // Initializing Session# code... 
            break; 
           case '2': 
             header("location: Team_Home.php"); // Redirecting To Other Page 
             $hint="<span style='color:green'> This username is registered </span>"; 
             $_SESSION['login_user']=$username; // Initializing Session 
             $_SESSION['login_pass']=$password; // Initializing Session# code... 
             $_SESSION['userID']=$userID; // Initializing Session# code... 
            break; 
           case '3': 
             header("location: Staff_Home.php"); // Redirecting To Other Page 
             $hint="<span style='color:green'> This username is registered </span>"; 
             $_SESSION['login_user']=$username; // Initializing Session 
             $_SESSION['login_pass']=$password; // Initializing Session# code... 
             $_SESSION['userID']=$userID; // Initializing Session# code... 
            break; 
           default: 
             $hint="<span style='color:red'>Not registered...</span>"; 
             header("location: index.php"); // Redirecting To Other Page 
            break; 
          } 
         } 
        } 


       } 
       else 
       { 
        $hint="<span style='color:red'>Not registered...</span>"; 
        header("location: index.php"); // Redirecting To Other Page 

       } 
      } 
     } 
    } 
    else{ 
     header("location: index.php"); // Redirecting To Other Page 
     $hint="<span style='color:red'>Not registered...</span>"; 
    } 
    echo $hint; 
    mssql_close($conn); 

我無法真正看到正在發生的事情，當我嘗試登錄我只是得到一個白色的屏幕，在控制檯中沒有任何信息或錯誤。

Answer 1

$myServer = "localhost"; 
$myUser = "sa"; 
$myPass = "sa123"; 
$myDB = "st"; 

//connection to the database 
$dbhandle = mssql_connect($myServer, $myUser, $myPass) 
    or die("Couldn't connect to SQL Server on $myServer"); 

die(); // whats this for? it can cause white screen.** 



$selected = mssql_select_db($myDB, $dbhandle) 
    or die("Couldn't open database $myDB");