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操作Oracle的php类

时间:2004/11/7 3:18:00来源:本站整理作者:蓝点我要评论(0)


//【警告】:未经许可请勿随便修改

//------------------------------------------------------------------------------------------

//------------------------------------------------------------------------------------------

//   

// 【文件名】:                c_ora_db.inc

// 【作  用】:                Oracle公用函数类

// 【作  者】:                天灰

//  

// 【最后修改日期】:        2001/05/11[cxx]      

// 【变量定义规则】:‘C_’=字符型,‘I_’=整型,‘N_’=数字型,‘L_’=布尔型,‘A_’=数组型

//------------------------------------------------------------------------------------------

//------------------------------------------------------------------------------------------

//    ※db_logon()                    开启数据库连接     

//    ※db_query()                    通用select             

//    ※db_change()                    数据库改变的通用函数(insert,delete,update)

//    ※db_insert()                    insert,直接调用db_change()

//    ※db_delete()                    delete,直接调用db_change()

//    ※db_update()                    update,直接调用db_change()                 

//    ※db_commit()                    事务递交

//    ※db_rollback()                    事务回退

//    ※db_logoff()                    断开数据库连接

//------------------------------------------------------------------------------------------





Class c_ora_db

{



     

//------------------------------------------------------------------------------------------

//        变量定义

//------------------------------------------------------------------------------------------

    var $C_user          = "";              //数据库用户名

    var $C_passwd        = "";            //数据库口令

    var $C_db            = "";                    //数据库

    var $I_linkID        = 0;                          //连线句柄

    var $I_stmtID        = 0;                          //查询句柄

    var $color             ="";                    //全局颜色

//------------------------------------------------------------------------------------------

     





//------------------------------------------------------------------------------------------

//        函数名:db_logon()

//        作  用:开启数据库连接

//        参  数:无

//        返回值:连线句柄(整型)

//        备  注:无

//------------------------------------------------------------------------------------------

    function  db_logon()    

    {    

        $this->I_linkID =  @OCILogon($this->C_user,$this->C_passwd,$this->C_db);

        if ($this->I_linkID == 0){AlertExit('数据库链接失败,请与DBA联系!');}

        return  $this->I_linkID;    

    }

//------------------------------------------------------------------------------------------

       

       

//------------------------------------------------------------------------------------------

//        函数名:db_query($C_sql,$A_define="",$I_start=-1,$I_end=-1)

//        作  用:select

//        参  数:$C_sql                    sql语句

//                $A_define                需绑定的字段。数组型         

//                $I_start                开始取记录 -1则取出查询的所有记录

//                $I_end                    结束取纪录

//        返回值:二维数组($A_rs)

//        备  注:通过数字0,1,2....可访问对应字段的值; 或通过查询字段名也可访问对应字段的值

//                如通过$A_rs[0][0]或$A_rs[0]['NAME']或$A_rs[0]['name']都可访问首条记录NAME字段

//                $I_start,$I_end是配合分页使用的参数。

//------------------------------------------------------------------------------------------

    function  db_query($C_sql,$A_define="",$I_start=-1,$I_end=-1)

    {    

       if (!$C_sql){AlertExit("参数不全!");}//检查参数

        

       //连接检测

       if ($this->I_linkID == 0){AlertExit('数据库链接失败,请与DBA联系!');}

        

       //格式检测

       $this -> I_stmtID = OCIParse($this -> I_linkID,$C_sql);     

       if (!$this -> I_stmtID){AlertExit(' sql格式出错!请与程序员联系');}

        

       //如果没指定绑定的字段,则从SQL语句中去取

       if($A_define=="")

       {

            $A_Cur = explode("select",$C_sql);

            $A_Cur = explode("from",$A_Cur[1]);

            $A_define = explode(",",$A_Cur[0]);

       }

       

           //绑定数据库表字段

        if(gettype($A_define) == "array")            //查询列是数组

        {

            for($i=0;$i
            {

                $A_define_up[$i] = trim(strtoupper($A_define[$i]));    //大写并去除空格

            }

            for($i=0;$i
            {

                OCIDefineByName($this -> I_stmtID,"$A_define_up[$i]",&$$A_define[$i]);    //绑定

            }

        }

        elseif(trim($A_define) <> "")                //查询列只有一个

        {

            $A_define_up = trim(strtoupper($A_define));

            OCIDefineByName($this -> I_stmtID,"$A_define_up",&$$A_define);

        }



        //执行绑定好的SQL语句

        if(!OCIExecute($this -> I_stmtID))

        {

            echo "执行出错:SQL Error:$C_sql
";

            return false;

        }

         

        $lower = 0;                    //返回二维数组的第一维下标控制变量

        $cnt = 0;                    //开始取数标识

         

        //取记录

        while (OCIFetchInto($this -> I_stmtID,&$cur,OCI_ASSOC))

        {

            //取查询出来的所有记录

            if ($I_start == -1)

            {

                if (gettype($A_define) == "array")        //查询列是数组

                {

                    for ($i=0;$i
                    {

                        if ($cur[$A_define_up[$i]] <> $$A_define[$i])

                        {

                            $$A_define[$i] = $cur[$A_define_up[$i]];     

                        }

                        $A_rs[$lower][$i] = $$A_define[$i];                    //用数字访问

                        $A_rs[$lower][$A_define[$i]] = $$A_define[$i];        //用小些访问

                        $A_rs[$lower][$A_define_up[$i]] = $$A_define[$i];    //用大写访问

                    }         

                }

                elseif (trim($A_define) <> "")            //查询列只有一个

                {

                     

                    if ($cur[$A_define_up] <> $$A_define)

                    {

                        $$A_define = $cur[$A_define_up];     

                    }

                    $A_rs[$lower][0] = $$A_define;                    //用数字访问

                    $A_rs[$lower][$A_define] = $$A_define;        //用小写访问

                    $A_rs[$lower][$A_define_up] = $$A_define;    //用大些访问

                }

                $lower++;            //下标加一

            }

             

            //取出指定记录(配合分页使用)

            if ($I_start <> -1)

            {

                if ($cnt >= $I_start)

                {

                    $cnt++;

                    if ($I_end - $I_start <> 0)

                    {

                        $I_end--;

                            if (gettype($A_define) == "array")

                            {

                                for($i=0;$i
                                {

                                    if ($cur[$A_define_up[$i]] <> $$A_define[$i])

                                    {

                                        $$A_define[$i] = $cur[$A_define_up[$i]];     

                                    }

                                    $A_rs[$lower][$i] = $$A_define[$i];                    //用数字访问

                                    $A_rs[$lower][$A_define[$i]] = $$A_define[$i];        //用小些访问

                                    $A_rs[$lower][$A_define_up[$i]] = $$A_define[$i];    //用大写访问

                                }

                            }elseif(trim($A_define) <> "")

                            {

                                if ($cur[$A_define_up] <> $$A_define)

                                {

                                    $$A_define = $cur[$A_define_up];     

                                }

                                $A_rs[$lower][0] = $$A_define;                    //用数字访问

                                $A_rs[$lower][$A_define] = $$A_define;        //用小些访问

                                $A_rs[$lower][$A_define_up] = $$A_define;    //用大写访问                     

                            }

                        $lower++;

                    }else

                    {

                        break;        //如果$I_end-$I_start=0  表示取完记录并跳出while循环

                    }     

                }else

                {

                    $cnt++;        //如果$cnt<$I_start,$cnt++

                }                 

            }

             

        }     //while的结束

         

        //释放句柄并返回查询数据(一个二维数组)

        OCIFreestatement($this -> I_stmtID);

        return $A_rs;      

         

    } //function的结束

//------------------------------------------------------------------------------------------





//------------------------------------------------------------------------------------------

//        函数名:db_change($C_sql,$A_bind)

//        作  用:db change

//        参  数:$C_sql                        sql语句

//                $A_bind                        需绑定的字段。数组型         

//        返回值:布尔值

//        备  注:insert,delete,update通用

//------------------------------------------------------------------------------------------

    function db_change($C_sql,$A_bind="")

    {

        if (!$C_sql){AlertExit("参数不全!");}//检查参数

         

        //连接检测

        if($this -> I_linkID==""){    AlertExit("我们的数据库正忙,请稍后再连接!");}     

         

        //格式检测

        $this -> I_stmtID = OCIParse($this -> I_linkID,$C_sql);     

        if (!$this -> I_stmtID){AlertExit(' sql格式出错!请与程序员联系');}

         

        //绑定

        if(gettype($A_bind) == "array")

        {

            for($i=0;$i
            {

                global $$A_bind[$i];

                $$A_bind[$i] = StripSlashes($$A_bind[$i]);            //去掉反斜线字元

                $$A_bind[$i] = str_replace("
            }

            for($i=0;$i
                OCIBindByName($this -> I_stmtID, ":$A_bind[$i]", &$$A_bind[$i], -1);  //绑定

            }

        }

        elseif(trim($A_bind) <> "")                                //不是数组,是字符

        {

            global $$A_bind;

            $$A_bind = StripSlashes($$A_bind);

            $$A_bind = str_replace("
            OCIBindByName($this -> I_stmtID, ":$arrBind", &$$A_bind, -1);                 

        }

         

        //执行并检测是否成功

        if(!OCIExecute($this -> I_stmtID,OCI_DEFAULT))

        {

            echo "执行出错:SQL Error:$C_sql
";

            return false;

        }

         

        /*//传回受影响的行数

        global $I_changenum;

        $I_changenum = OCINumrows($this -> I_stmtID);*/

         

        //释放句柄,传回值

        OCIFreeStatement($this -> I_stmtID);

        return true;

    }

//------------------------------------------------------------------------------------------





//------------------------------------------------------------------------------------------

//        函数名:db_delete($C_sql)

//        作  用:delete

//        参  数:C_sql                    sql语句

//        返回值:布尔值

//        备  注:该函数只是为了使用直观,本质调用db_change()

//------------------------------------------------------------------------------------------

    function db_delete($C_sql)

    {

        return $this -> db_change($C_sql);

    }

//------------------------------------------------------------------------------------------





//------------------------------------------------------------------------------------------

//        函数名:db_insert($C_sql,A_bind)

//        作  用:insert

//        参  数:C_sql                    sql语句

//                A_bind                    绑定

//        返回值:布尔值

//        备  注:该函数只是为了使用直观,本质调用db_change()

//------------------------------------------------------------------------------------------

    function db_insert($C_sql,$A_bind="")

    {

        return $this -> db_change($C_sql,$A_bind);

    }

//------------------------------------------------------------------------------------------





//------------------------------------------------------------------------------------------

//        函数名:db_update($C_sql,A_bind)

//        作  用:update

//        参  数:C_sql                    sql语句

//                A_bind                    绑定

//        返回值:布尔值

//        备  注:该函数只是为了使用直观,本质调用db_change()

//------------------------------------------------------------------------------------------

    function db_update($C_sql,$A_bind="")

    {

        return $this -> db_change($C_sql,$A_bind);

    }

//------------------------------------------------------------------------------------------







//------------------------------------------------------------------------------------------

//        函数名:db_commit()

//        作  用:事务递交

//        参  数:无

//        返回值:布尔值

//        备  注:无

//------------------------------------------------------------------------------------------     

    function db_commit()

    {

        return    (OCICommit($this->I_linkID));

    }     

//------------------------------------------------------------------------------------------





//------------------------------------------------------------------------------------------

//        函数名:db_rollback()

//        作  用:事务回退

//        参  数:无

//        返回值:布尔值

//        备  注:无

//------------------------------------------------------------------------------------------     

    function db_rollback()

    {

        return  (OCIRollback($this->I_linkID));

    }     

//------------------------------------------------------------------------------------------



     

//------------------------------------------------------------------------------------------

//        函数名:db_logoff()

//        作  用:断开数据库连接

//        参  数:无

//        返回值:布尔值

//        备  注:无

//------------------------------------------------------------------------------------------     

    function db_logoff()

    {

        return (OCILogoff($this->I_linkID));

    }

//------------------------------------------------------------------------------------------



     

//------------------------------------------------------------------------------------------

}

?> 

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