php模块参考，php_PHP教程

php模块参考，php

  1 php
  2 //数据库连接类
  3 class ConnDB{
  4     
  5     var $dbtype;
  6     var $host;
  7     var $user;
  8     var $pwd;
  9     var $dbname;
 10     
 11     //构造方法
 12     function ConnDB($dbtype,$host,$user,$pwd,$dbname){
 13         $this->dbtype=$dbtype;
 14         $this->host=$host;
 15         $this->user=$user;
 16         $this->pwd=$pwd;
 17         $this->dbname=$dbname;
 18     }
 19 
 20     //实现数据库的连接并返回连接对象
 21     function GetConnId(){
 22          
 23         if($this->dbtype=="mysql" || $this->dbtype=="mssql"){
 24             $dsn="$this->dbtype:host=$this->host;dbname=$this->dbname";
 25         }else{
 26             $dsn="$this->dbtype:dbname=$this->dbname";
 27         }    
 28         try {
 29             $conn = new PDO($dsn, $this->user, $this->pwd);     //初始化一个PDO对象，就是创建了数据库连接对象$pdo
 30             $conn->query("set names utf8");
 31             return $conn;
 32         } catch (PDOException $e) {
 33             die ("Error!: " . $e->getMessage() . "
");
 34         }
 35 
 36          
 37     }    
 38 }
 39 
 40 //数据库管理类
 41 class AdminDB{
 42     
 43     
 44     function ExecSQL($sqlstr,$conn){
 45         
 46         $sqltype=strtolower(substr(trim($sqlstr),0,6));
 47         $rs=$conn->prepare($sqlstr);        //准备查询语句
 48         $rs->execute();                    //执行查询语句，并返回结果集
 49         if($sqltype=="select"){
 50             $array=$rs->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据
 51             if(count($array)==0 || $rs==false)
 52                 return false;
 53             else
 54                 return $array;
 55         }elseif ($sqltype=="update" || $sqltype=="insert" || $sqltype=="delete"){            
 56             if($rs)
 57                 return true;
 58             else 
 59                 return false;    
 60         }
 61     }
 62 }
 63 //分页类
 64 class SepPage{
 65     var $rs;
 66     var $pagesize;
 67     var $nowpage;
 68     var $array;
 69     var $conn;
 70     var $sqlstr;
 71     function ShowData($sqlstr,$conn,$pagesize,$nowpage){    //定义方法
 72         if(!isset($nowpage) || $nowpage=="")            //判断变量值是否为空
 73             $this->nowpage=1;                        //定义每页起始页
 74         else
 75             $this->nowpage=$nowpage;
 76         $this->pagesize=$pagesize;                    //定义每页输出的记录数
 77         $this->conn=$conn;                            //连接数据库返回的标识
 78         $this->sqlstr=$sqlstr;                            //执行的查询语句
 79         $offset=($this->nowpage-1)*$this->pagesize;
 80         $sql=$this->sqlstr." limit $offset, $this->pagesize";
 81         $result=$this->conn->prepare($sql);            //准备查询语句
 82         $result->execute();                        //执行查询语句，并返回结果集
 83         $this->array=$result->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据
 84         if(count($this->array)==0 || $this->array==false)
 85             return false;
 86         else
 87             return $this->array;
 88     }
 89     
 90     function ShowPage($contentname,$utits,$anothersearchstr,$anothersearchstrs,$class){
 91         $str="";
 92         $res=$this->conn->prepare($this->sqlstr);            //准备查询语句
 93         $res->execute();                        //执行查询语句，并返回结果集
 94         $this->array=$res->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据    
 95         $record=count($this->array);                //统计记录总数
 96         
 97         $pagecount=ceil($record/$this->pagesize);        //计算共有几页
 98         $str.=$contentname." ".$record." ".$utits." 每页 ".$this->pagesize." ".$utits." 第 ".$this->nowpage." 页/共 ".$pagecount." 页";
 99         $str.="    ";
100         if($this->nowpage!=1)
101             $str.="$anothersearchstr."&parameter2=".$anothersearchstrs." class=".$class.">首页";
102         else
103             $str.="首页";
104         $str.=" ";
105         if($this->nowpage!=1)
106             $str.="$this