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");         //包含adodb类库文件 
   $conn = &newadoconnection('oci8');
   $conn->connect($dbserver,$dbuser,$dbpass);  
  ?> 

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

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

  <?php 
  include("adodb/adodb.inc.php");         //包含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");         //包含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");         //包含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");         //包含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");         //包含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这个超级用户
  $dbuser="system";
  $dbpass="abcde";
  $dbname="";
  //$sqlstr="select * from func;";
  $myexpectstr=$this->dbconnect($dbtype,$dbserver,$dbuser,$dbpass,$dbname,$sqlstr);
  return $myexpectstr;
 }
}