展开全部

我这里有个很好的通用数据62616964757a686964616fe78988e69d8331333262363066库连接类,我就喜欢用这个,试试看.

class DB_Handle{

var $ClassName = "DB_Handle";

var $Server;

var $UserName;

var $Password;

var $Database;

var $LinkID=0;

var $QueryResult="";

var $LastInsertID = "";

/* private ignore=>ignore the error and continue, halt=>report the error and halt, report=>report the error and continue */

var $Halt_On_Error = "report";

var $Error = "";

var $ErrNo = 0;

/**public

* remark: This is the db_mysql_class's structure

* function: Set the server,username,password,database variable.

*/

function DB_Handle($server="",$username="",$password="",$database=""){

$this->Server = $server;

$this->UserName = $username;

$this->Password = $password;

$this->Database = $database;

}

/**public

* function: Connect database and select database

* success: retun 1

* failed: return 0

*/

function connect(){

$this->LinkID = mysql_connect($this->Server,$this->UserName,$this->Password);

if(!$this->LinkID){

$this->halt("mysql_connect($this->Server,$this->UserName,$this->Password): Failed");

return 0;

}

if(!@mysql_select_db($this->Database)){

$this->halt("mysql_select_db($this->Database) Failed.");

return 0;

}

mysql_query("SET NAMES UTF8");

return 1;

}

/**public

* function: Check the database, if exist then select

* exist: return 1

* not exist: return 0

*/

function selectDatabase(){

if(@mysql_select_db($this->Database))

return 1;

else

return 0;

}

/**public

* function: Execute SQL instruction

* success: return SQL Result.

* failed: return 0;

*/

function execQuery($sql=""){

if($this->LinkID == 0){

$this->halt("Execute SQL Failed: Hava not valid database connect.");

return 0;

}

ob_start();

$this->QueryResult = mysql_query($sql,$this->LinkID);

$error = ob_get_contents();

ob_end_clean();

if($error){

$this->halt("Execute SQL: mysql_query($sql,$this->LinkID) failed.");

return 0;

}

$reg = "#insert into#";

if(preg_match($reg,$sql)){

$sql = "select @@IDENTITY as id";

$res = mysql_query($sql,$this->LinkID);

$this->LastInsertID = mysql_result($res,0,id);

}

return $this->QueryResult;

}

/** public

* function :Get one query result .

* success:return result

* failed: return 0

*/

function getAresult($sql=""){

ob_start();

$this->QueryResult = mysql_query($sql,$this->LinkID);

$error = ob_get_contents();

ob_end_clean();

if($error){

$this->halt("Halt_On_Error! ");

return "Halt_On_Error! ";

}

$row = @mysql_num_rows($this->QueryResult);

if($row==0){

return "没有记录";

}

$rs= @mysql_fetch_row($thi->QueryResult);

echo $rs[0];

}

/**public

* function: Get the query result's row number

* success: return the row fo the Result

* failed: return 0

*/

function getTotalRowNum($result=""){

if($result != "") $this->QueryResult = $result;

$row = @mysql_num_rows($this->QueryResult);

if($row >= 0) return $row;

$this->halt("Get a row of result Failed: Result $result is invalid.");

return 0;

}

/**public

* function: Get the last insert record's id

* success: return id

* failed: return 0

*/

function lastInsertID(){

return $this->LastInsertID;

}

/**public

* function: Get a field's value

* success: return value of the field

* failed: return 0

*/

function getField($result="",$row=0,$field=0){

if($result != "") $this->QueryResult = $result;

$fieldvalue = @mysql_result($this->QueryResult,$row,$field);

if($fieldvalue != "") return $fieldvalue;

$this->halt("Get field: mysql_result($this->QueryResult,$row,$field) failed.");

return 0;

//Here should have error handle

}

/**public

* function: Get next record

* success: return a array of the record's value

* failed: return 0

*/

function nextRecord($result=""){

if($result != "") $this->QueryResult = $result;

$record = @mysql_fetch_array($this->QueryResult);

if(is_array($record)) return $record;

//$this->halt("Get the next record Failed: the Result $result is invalid.");

return 0;

}

/**public

* function: Free the Query Result

* success return 1

* failed: return 0

*/

function freeResult($result=""){

if($result != "") $this->QueryResult = $result;

return @mysql_free_result($this->QueryResult);

}

/**public

* function: Set the Halt_On_Error's state

* success: return 1

* failed: return 0

*/

function setHaltOnError($state="ignore"){

if(!($state == "ignore" || $state == "report" || $state == "halt")){

$this->halt("Set the Halt_On_Error Fail: There is no state value $state");

return 0;

}

$this->Halt_On_Error = $state;

return 1;

}

/**public

* function: Get the Halt_On_Error's state

*/

function getHaltOnError(){

return $this->Halt_On_Error;

}

/**public

* function: Get the class's name

*/

function toString(){

return $this->ClassName;

}

/**private

* function: Error handle

*/

function halt($msg){

$this->Error = @mysql_error($this->LinkID);

$this->ErrNo = @mysql_errno($this->LinkID);

if ($this->Halt_On_Error == "ignore") return;

$this->makeMsg($msg);

if ($this->Halt_On_Error == "halt") die("Session halted");

}

/**private

* function: Make error information and print

*/

function makeMsg($msg){

printf("Database error: %s\n", $msg);

printf("mysql Error: %s (%s)\n",$this->ErrNo,$this->Error);

}

}

//链接数据库

$db=new DB_Handle("localhost","root","root","Database");

$db->connect();

?>

已赞过

已踩过<

你对这个回答的评价是？

评论

收起