PHP实战：PHP程序中使用adodb连接不同数据库的代码实例

 <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
   $conn = &NewADOConnection('oci8');
   $conn->Connect($DBServer,$DBUser,$DBPass);  
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn = NewADOConnection('postgres'); 
  $conn->Connect('localhost', 'root', 'pass', 'mydb');    
  ?> 

  <?php 
  include("adodb/adodb.inc.php");           //包括adodb类库文件 
  $conn = NewADOConnection(' postgres '); 
  $conn->Connect('host=localhost port=5432 dbname=mydb'); //连接PostgreSQL数据库 
  ?>

  <?php 
  include("adodb/adodb.inc.php");                 //包括adodb类库文件 
  $conn = NewADOConnection('mysql://root:1981427@localhost/test');      //连接MySQL数据库 
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn = NewADOConnection('mysql');        
  $conn->Connect('localhost', 'root', '1981427', 'test');   //连接MySQL数据库 
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn = NewADOConnection('access');       //连接Access数据库 
  $conn->Connect("Driver={Microsoft Access Driver (*.mdb)};Dbq=d://mydb.mdb;Uid=Admin;Pwd=;"); 
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn=NewADOConnection('odbc_mssql');      //连接SQL Server数据库 
  $conn->Connect("Driver={SQL Server};Server=localhost;Database=mydb;",'username','password'); 
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn=NewADOConnection('mssql');        //连接SQL Server数据库 
  $conn->Connect("localhost', 'username', 'password', 'mydb'); 
  ?> 

  <?php 
  include("adodb/adodb.inc.php");         //包括adodb类库文件 
  $conn=NewADOConnection('db2');         //连接DB2数据库 
  $conn->Connect("driver={IBM db2 odbc DRIVER};database=mydb;hostname=localhost;port=50000; 
   protocol=TCPIP;uid=root; pwd=pass"); 
  ?> 

public function DBConnect($DBType,$DBServer,$DBUser,$DBPass,$DBName,$sqlStr)
 {
 $StrCon;
 $result;
 $conn;
 $output="";
 switch($DBType)
 {
  Case 0: //Sql Server
   //$StrCon ="Driver={SQL Server};Server=$DBServer;Database=$DBName;Uid=$DBUser;Pwd=$DBPass;";
   //创建SQL Server数据库连接
   $conn= &NewADOConnection('odbc_mssql');
   $conn->Connect("Driver={SQL Server};Server=".$DBServer.";Database=".$DBName.";Uid=".$DBuser.";Pwd=".$DBPass.";");   
  break;
  Case 1: //Oracle
   //$StrCon ="Provider=MSDAORA.1;Data Source=$DBServer;Password=$DBPass;User ID=$DBUser;Persist Security Info=True;";
   //创建oracle数据库连接
   $conn = &NewADOConnection('oci8');
   $conn->Connect($DBServer,$DBUser,$DBPass);
  break;
  Case 2: //Access
   //$StrCon ="Driver={Microsoft Access Driver (*.mdb)};Dbq=$DBName;Uid=$DBUser;Pwd=$DBPass;";
   //创建Access数据库连接
   $conn = &NewADOConnection('access');
   $conn->Connect("Driver={Microsoft Access Driver (*.mdb)};Dbq=".$DBName.";Uid=".$DBUser.";Pwd=".$DBPass.";");
  break;
  Case 3: //mysql
   //创建mysql数据库连接
   $conn = NewADOConnection('mysql');
   $conn->Connect($DBServer,$DBUser,$DBPass,$DBName);
   //$conn = &NewADOConnection("mysql://".$DBUser.":".$DBPass."@".$DBServer."/".$DBName); 
  break;
  default:
  echo "抱歉,暂不支持此数据库,请检查配置的数据库类型!";
  die();
  break; 
 }
 //执行查询操作
 $result=$conn->Execute($sqlStr);
 //数据库查询失败处理
 if ($result==false)
 {
  die("查询失败");
 }
 //输出查询结果
 while(!$result->EOF)
 {
  $max=$result->fieldcount();
  //$output=array();
  for($i=0;$i<$max;$i++)
  {
  //echo $result->fields[$i].' ';
  $res[$i]=$result->fields[$i].' ';
  $output=$output.$res[$i];
  }
 $result->MoveNext();
 }
 $output=trim($output);
 //echo $output;
 //关闭数据库连接
 $conn->Close();
 return $output;
 }

 public function ExecuteSql($sqlStr)
 {
  $DBType=1;
  $DBServer="arron";
  //数据库用户名,不要使用sys这个超等用户
  $DBUser="system";
  $DBPass="abcde";
  $DBName="";
  //$sqlStr="SELECT * FROM func;";
  $myExpectStr=$this->DBConnect($DBType,$DBServer,$DBUser,$DBPass,$DBName,$sqlStr);
  return $myExpectStr;
 }
}