php的access操作类_php技巧

代码如下:
--------------------------------------------------------------------
//FileName:class.php
//Summary: Access数据库操作类
//Author: forest
//CreateTime: 2006-8-10
//LastModifed:
//copyright (c)2006
//http://freeweb.nyist.net/~chairy
//[email]chaizuxue@163.com[/email]
// 使用范例：
//$databasepath="database.mdb";
//$dbusername="";
//$dbpassword="";
//include_once("class.php");
//$access=new Access($databasepath,$dbusername,$dbpassword);

--------------------------------------------------------------------
class Access
{
var $databasepath,$constr,$dbusername,$dbpassword,$link;
function Access($databasepath,$dbusername,$dbpassword)
{
$this->databasepath=$databasepath;
$this->username=$dbusername;
$this->password=$dbpassword;
$this->connect();
}

function connect()
{
$this->constr="DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" . realpath($this->databasepath);
$this->link=odbc_connect($this->constr,$this->username,$this->password,SQL_CUR_USE_ODBC);
return $this->link;
//if($this->link) echo "恭喜你,数据库连接成功!";
//else echo "数据库连接失败!";
}

function query($sql)
{
return @odbc_exec($this->link,$sql);
}

function first_array($sql)
{
return odbc_fetch_array($this->query($sql));
}

function fetch_row($query)
{
return odbc_fetch_row($query);
}

function total_num($sql)//取得记录总数
{
return odbc_num_rows($this->query($sql));
}

function close()//关闭数据库连接函数
{
odbc_close($this->link);
}

function insert($table,$field)//插入记录函数
{
$temp=explode(',',$field);
$ins='';
for ($i=0;$i {
$ins.="'".$_POST[$temp[$i]]."',";
}
$ins=substr($ins,0,-1);
$sql="INSERT INTO ".$table." (".$field.") VALUES (".$ins.")";
$this->query($sql);
}

function getinfo($table,$field,$id,$colnum)//取得当条记录详细信息
{
$sql="SELECT * FROM ".$table." WHERE ".$field."=".$id."";
$query=$this->query($sql);
if($this->fetch_row($query))
{
for ($i=1;$i<$colnum;$i++)
{
$info[$i]=odbc_result($query,$i);
}
}
return $info;
}

function getlist($table,$field,$colnum,$condition,$sort="ORDER BY id DESC")//取得记录列表
{
$sql="SELECT * FROM ".$table." ".$condition." ".$sort;
$query=$this->query($sql);
$i=0;
while ($this->fetch_row($query))
{
$recordlist[$i]=getinfo($table,$field,odbc_result($query,1),$colnum);
$i++;
}
return $recordlist;
}

function getfieldlist($table,$field,$fieldnum,$condition="",$sort="")//取得记录列表
{
$sql="SELECT ".$field." FROM ".$table." ".$condition." ".$sort;
$query=$this->query($sql);
$i=0;
while ($this->fetch_row($query))
{
for ($j=0;$j<$fieldnum;$j++)
{
$info[$j]=odbc_result($query,$j+1);
}
$rdlist[$i]=$info;
$i++;
}
return $rdlist;
}

function updateinfo($table,$field,$id,$set)//更新记录
{
$sql="UPDATE ".$table." SET ".$set." WHERE ".$field."=".$id;
$this->query($sql);
}

function deleteinfo($table,$field,$id)//删除记录
{
$sql="DELETE FROM ".$table." WHERE ".$field."=".$id;
$this->query($sql);
}

function deleterecord($table,$condition)//删除指定条件的记录
{
$sql="DELETE FROM ".$table." WHERE ".$condition;
$this->query($sql);
}

function getcondrecord($table,$condition="")// 取得指定条件的记录数
{
$sql="SELECT COUNT(*) AS num FROM ".$table." ".$condition;
$query=$this->query($sql);
$this->fetch_row($query);
$num=odbc_result($query,1);
return $num;
}
}
?>