CREATE PROCEDURE sp_name ([proc_parameter[,...]]) 
 
    [characteristic ...] routine_body 
 
CREATE FUNCTION sp_name ([func_parameter[,...]]) 
 
    RETURNS type 
 
    [characteristic ...] routine_body 
 
    proc_parameter: 
 
    [ IN | OUT | INOUT ] param_name type 
 
    func_parameter: 
 
    param_name type 
 
type: 
 
    Any valid MySQL data type 
 
characteristic: 
 
    LANGUAGE SQL 
 
  | [NOT] DETERMINISTIC 
 
  | { CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA } 
 
  | SQL SECURITY { DEFINER | INVOKER } 
 
  | COMMENT 'string' 
 
routine_body: 
 
    Valid SQL procedure statement or statements

Create procedure sp_Name ([proc_parameter ])
routine_body

Create functionsp_Name ([func_parameter ])
Returns type
Routine_body

mysql> delimiter // 
mysql> create procedure g 
    -> begin 
    -> select version() i 
    -> end 
    -> // 
Query OK, 0 rows affected 
 
mysql> call getversion(@a 
    -> // 
Query OK, 0 rows affected 
 
mysql> select @a; 
    -> // 
+---------------------+ 
| @a                  | 
+---------------------+ 
| 5.0.45-community-nt | 
+---------------------+ 
1 row in set (0.05 sec)

Drop table if exists user;   
    Create table user(   
        Id int unsigned not null auto_increment,   
        Name varchar(20) not null,   
        Pwd char(32) not null,   
        Primary key(Id)   
);

Delimiter //   
    Create procedure insertuser(in username varchar(20),in userpwd varchar(32))   
    Begin   
        Insert into welefen.user(Name,Pwd) values (username,md5(userpwd));   
    End   
    //

Delimiter //   
    Create procedure validateuser(in username varchar(20),out param1)   
    Begin    
        Select Pwd into param1 from welefen.user where Name=username;   
    End   
    //

Delimiter //   
    Create procedure modifyPwd(in username varchar(20),in userpwd varchar(32))   
    Begin   
        Update welefen.user set Pwd=md5(userpwd) where Name=username;   
    End   
    //

Delimiter //   
    Create procedure deleteuser(in username varchar(20))  
Begin   
         delete from welefen.user where Name=username;   
    End   
    //

<?php   
     if (!mysql_connect("localhost","root","welefen")){    
         echo "連接數(shù)據(jù)庫(kù)失敗";   
    }   
     if (!mysql_select_db("welefen")){   
         echo "選擇數(shù)據(jù)庫(kù)表失敗<br>";   
    }   
       
    $insert_user=array("welefen","welefen");//這里的welefen分別為用戶名、密碼   
     if (mysql_query("call insertuser('$insert_user[0]','$insert_user[1]')")){   
         echo "添加用戶$insert_user[0]成功<br>";   
    }else {   
         echo "添加用戶$insert_user[0]失敗<br>";   
    }   
       
    $validate_user=array("welefen","welefen");//這里的welefen分別為用戶名、密碼   
    mysql_query("call validateuser('$validate_user[0]',@a)");   
    $Pwd=mysql_query("select @a");   
    $result=mysql_fetch_array($Pwd);   
     if ($result[0]==md5($validate_user[1])){   
         echo "用戶$validate_user[0]驗(yàn)證正確<br>";   
    }else {   
         echo "用戶$validate_user[0]驗(yàn)證錯(cuò)誤<br>";   
    }   
       
    $modify_Pwd=array("welefen","weilefeng"); //welefen為用戶名weilefeng為新密碼   
     if (mysql_query("call modifyPwd('$modify_Pwd[0]','$modify_Pwd[1]')")){  
         echo "用戶$modigy_Pwd[0]的密碼修改成功<br>";   
    }else {
         echo "用戶$modigy_Pwd[0]的密碼修改失敗<br>";   
    }   
       
    $delete_user=array("welefen");           //welefen為用戶名   
     if (mysql_query("call deleteuser('$delete_user[0]')")){   
         echo "用戶$delete_user[0]刪除成功<br>";   
    }else {   
         echo "用戶$delete_user[0]刪除失敗<br>";   
    }   
?>