php模块参考

<?php
//数据库连接类
class ConnDB{
    
    var $dbtype;
    var $host;
    var $user;
    var $pwd;
    var $dbname;
    
    //构造方法
    function ConnDB($dbtype,$host,$user,$pwd,$dbname){
        $this->dbtype=$dbtype;
        $this->host=$host;
        $this->user=$user;
        $this->pwd=$pwd;
        $this->dbname=$dbname;
    }

    //实现数据库的连接并返回连接对象
    function GetConnId(){
         
        if($this->dbtype=="mysql" || $this->dbtype=="mssql"){
            $dsn="$this->dbtype:host=$this->host;dbname=$this->dbname";
        }else{
            $dsn="$this->dbtype:dbname=$this->dbname";
        }    
        try {
            $conn = new PDO($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
            $conn->query("set names utf8");
            return $conn;
        } catch (PDOException $e) {
            die ("Error!: " . $e->getMessage() . "<br/>");
        }

         
    }    
}

//数据库管理类
class AdminDB{
    
    
    function ExecSQL($sqlstr,$conn){
        
        $sqltype=strtolower(substr(trim($sqlstr),0,6));
        $rs=$conn->prepare($sqlstr);        //准备查询语句
        $rs->execute();                    //执行查询语句，并返回结果集
        if($sqltype=="select"){
            $array=$rs->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据
            if(count($array)==0 || $rs==false)
                return false;
            else
                return $array;
        }elseif ($sqltype=="update" || $sqltype=="insert" || $sqltype=="delete"){            
            if($rs)
                return true;
            else 
                return false;    
        }
    }
}
//分页类
class SepPage{
    var $rs;
    var $pagesize;
    var $nowpage;
    var $array;
    var $conn;
    var $sqlstr;
    function ShowData($sqlstr,$conn,$pagesize,$nowpage){    //定义方法
        if(!isset($nowpage) || $nowpage=="")            //判断变量值是否为空
            $this->nowpage=1;                        //定义每页起始页
        else
            $this->nowpage=$nowpage;
        $this->pagesize=$pagesize;                    //定义每页输出的记录数
        $this->conn=$conn;                            //连接数据库返回的标识
        $this->sqlstr=$sqlstr;                            //执行的查询语句
        $offset=($this->nowpage-1)*$this->pagesize;
        $sql=$this->sqlstr." limit $offset, $this->pagesize";
        $result=$this->conn->prepare($sql);            //准备查询语句
        $result->execute();                        //执行查询语句，并返回结果集
        $this->array=$result->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据
        if(count($this->array)==0 || $this->array==false)
            return false;
        else
            return $this->array;
    }
    
    function ShowPage($contentname,$utits,$anothersearchstr,$anothersearchstrs,$class){
        $str="";
        $res=$this->conn->prepare($this->sqlstr);            //准备查询语句
        $res->execute();                        //执行查询语句，并返回结果集
        $this->array=$res->fetchAll(PDO::FETCH_ASSOC);        //获取结果集中的所有数据    
        $record=count($this->array);                //统计记录总数
        
        $pagecount=ceil($record/$this->pagesize);        //计算共有几页
        $str.=$contentname."&nbsp;".$record."&nbsp;".$utits."&nbsp;每页&nbsp;".$this->pagesize."&nbsp;".$utits."&nbsp;第&nbsp;".$this->nowpage."&nbsp;页/共&nbsp;".$pagecount."&nbsp;页";
        $str.="&nbsp;&nbsp;&nbsp;&nbsp;";
        if($this->nowpage!=1)
            $str.="<a href=".$_SERVER['PHP_SELF']."?page=1&page_type=".$anothersearchstr."&parameter2=".$anothersearchstrs." class=".$class.">首页</a>";
        else
            $str.="<font color='#555555'>首页</font>";
        $str.="&nbsp;";
        if($this->nowpage!=1)
            $str.="<a href=".$_SERVER['PHP_SELF']."?page=".($this->nowpage-1)."&page_type=".$anothersearchstr."&parameter2=".$anothersearchstrs." class=".$class.">上一页</a>";
        else
            $str.="<font color='#555555'>上一页</font>";
        $str.="&nbsp;";    
        if($this->nowpage!=$pagecount)
            $str.="<a href=".$_SERVER['PHP_SELF']."?page=".($this->nowpage+1)."&page_type=".$anothersearchstr."&parameter2=".$anothersearchstrs." class=".$class.">下一页</a>";
        else
            $str.="<font color='#555555'>下一页</font>";    
        $str.="&nbsp;";
        if($this->nowpage!=$pagecount)
            $str.="<a href=".$_SERVER['PHP_SELF']."?page=".$pagecount."&page_type=".$anothersearchstr."&parameter2=".$anothersearchstrs." class=".$class.">尾页</a>";
        else
            $str.="<font color='#555555'>尾页</font>";
        if(count($this->array)==0 || $this->array==false)            
            return "无数据！";
        else
            return $str;    
    }
}
//系统常用方法
class UseFun{
    
    function UnHtml($text){
       $content=(nl2br(htmlspecialchars($text)));
       $content=str_replace("[strong]","<strong>",$content);
       $content=str_replace("[/strong]","</strong>",$content);
       $content=str_replace("[em]","<em>",$content);
       $content=str_replace("[/em]","</em>",$content);
       $content=str_replace("[u]","<u>",$content);
       $content=str_replace("[/u]","</u>",$content);
    
    
       $content=str_replace("[font color=#FF0000]","<font color=#FF0000>",$content);
       $content=str_replace("[font color=#00FF00]","<font color=#00FF00>",$content);
       $content=str_replace("[font color=#0000FF]","<font color=#0000FF>",$content);
    
       $content=str_replace("[font face=楷体_GB2312]","<font face=楷体_GB2312>",$content);
       $content=str_replace("[font face=宋体]","<font face=新宋体>",$content);
       $content=str_replace("[font face=隶书]","<font face=隶书>",$content);
       $content=str_replace("[/font]","</font>",$content);
       //$content=str_replace(chr(32)," ",$content);
       $content=str_replace("[font size=1]","<font size=1>",$content);
       $content=str_replace("[font size=2]","<font size=2>",$content);
       $content=str_replace("[font size=3]","<font size=3>",$content);
       $content=str_replace("[font size=4]","<font size=4>",$content);
       $content=str_replace("[font size=5]","<font size=5>",$content);
       $content=str_replace("[font size=6]","<font size=6>",$content);
       
       $content=str_replace("[FIELDSET][LEGEND]","<FIELDSET><LEGEND>",$content);
       $content=str_replace("[/LEGEND]","</LEGEND>",$content);
       $content=str_replace("[/FIELDSET]","</FIELDSET>",$content);
       return $content;
    }
    
}

?>