后端开发|php教程
Php,Mssql操作
后端开发-php教程
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<?php
/*
* class :Mssql
* time :-12-10
* author :Libaochang
* version :1.0b
* description :mssql database access class,it can execute the procedur or sql
*/
class MssqlUtil
{
var $user = null; //database user name
var $keys = null; //database user password
var $host = localhost; //database host name/ip and port
var $base = null; //database name
var $link = null; //create link
/**
* construct function init all parmeters
* @param $host database host name/ip and port
* @param $user database user name
* @param $keys database user password
* @param $base database name
*/
function __construct($host,$user,$keys,$base)
{
$this->host = $host;
$this->user = $user;
$this->keys = $keys;
$this->base = $base;
}
/**
* create the connection
*/
function connect()
{
$this->link = mssql_connect($this->host,$this->user,$this->keys);
if(!$this->link)
{
die(connecting failed...check the module and setting...);
}
$select = mssql_select_db($this->base,$this->link);
if(!$select)
{
die(data base is not exist...,please checke it ...);
}
}
/**
* execute the procedur width the parameter
* @param $pName procedur name
* @param $parName parameters its like this $par=array(@a=>a)
* @param $sqlTyle the procedurs parameter type, its llike this $sqlType=array(SQLVARCHAR,SQLVARCHAR); and there is not the char single quote mark().
* @return object array
*/
function executeProcedur($pName,$parName,$sqlTyle)
{
$this->connect();
$stmt = mssql_init($pName,$this->link);
if(isset($parName))
{
$i = 0;
foreach($parName as $par=>$value)
{
mssql_bind($stmt,$par,$value,$sqlTyle[$i]);
++$i;
}
$res = mssql_execute($stmt);
$this->close();
while($row=mssql_fetch_assoc($res))
{
$r[] = $row;
}
unset($i);
mssql_free_result($res);
mssql_free_statement($stmt);
return $r;
}
}
/**
* execute procedur without the parameter
* @param $pName Procedur Name
* @return object array
*/
function executeProcedurNoPar($pName)
{
$this->connect();
$stmt = mssql_init($pName,$this->link);
$res = mssql_execute($stmt);
$this->close();
while($row=mssql_fetch_assoc($res))
{
$r[] = $row;
}
mssql_free_result($res);
mssql_free_statement($stmt);
return $r;
}
/**
* Get one row return Array
* @param $sql
* @return Array
*/
function getRowArray($sql)
{
$res = $this->query($sql);
$r = mssql_fetch_row($res);
mssql_free_result($res);
return $r;
}
/**
* Get one row return object
* @param $sql Sql
* @return Object
*/
function getRowObject($sql)
{
$res = $this->query($sql);
$r = mssql_fetch_assoc($res);
return $r;
}
/**
* Execute one sql
* @param $sql Sql
* @return result
*/
function query($sql)
{
$this->connect();
$res = mssql_query($sql,$this->link);
$this->close();
return $res;
}
/**
* Get every row from result by Object, Return a Array with every element is Object
* @param $sql
* @return Object Array result
*/
function getResult($sql)
{
$res = $this->query($sql);
while($row=mssql_fetch_assoc($res))
{
$r[] = $row;
}
unset($row);
mssql_free_result($res);
return $r;
}
/**
* execute a sql
* @param $sql Sql
*/
function executeSql($sql)
{
return $this->query($sql);
}
/**
* execute a sql statement
* @param $sql
* @return int $affected rows
*/
function querySql($sql)
{
$this->connect();
mssql_query($sql,$this->link);
$affected = mssql_rows_affected($this->link);
$this->close();
return $affected;
}
/**
* close connection
*/
function close()
{
mssql_close();
}
}
?>
下面说下调用
function __autoload($MssqlUtil)
{
require $MssqlUtil..php;
}
$db = new MssqlUtil($config[host],$config[user],$config[keys],$config[ase]);
主要说下带参数的存储过程调用
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$pName 存储过程名字
$parName 参数，参数形式很重要，是数组类型，对应关系为
array(@a=>a) @a 为存储过程里面的参数，a为要传递的值
$sqlTyle 是存储过程参数的数据类型，是数组形式，也很重要
array(SQLCHAR,SQLVARCHAR),注意不要加单引号等，因为SQLVARCHAR是SQL的一些常量
带参数存储过程
$db->executeProcedur($pName,$parName,$sqlTyle);
无参数存储过程
$db->executeProcedurNoPar($pName);
select * from t2 where t2.id in(select max(t2.id) from t1 join t2 on t1.id = t2.pid group by t1.id);
取每个分类的最新一条数据。此处做个记录。
t1为类别表，t2为主表
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