怎么在function里操作pdo呀

如何在function里操作pdo呀
代码如下

require("../inc/pdo.php");<br /><br />function output($action,$select,$name){<br />$select=$dbc->prepare("select id,ztname,zttype,zttime,headimg,riseimg from naszt where 1=1 and zttype=:zttype");<br />$select->bindValue(":zttype",$action);<br />$select->execute();<br />$result='';<br />while($row=$select->fetch()){<br />$result.='<ul id="thumbs"><li class="'.$name.'">';<br />$result.='<div class="img-container">';<br />$result.='<div class="item-img">';<br />$result.='<img  src="/static/imghwm/default1.png"  data-src="ztImg/'.$row['riseimg'].'"  class="lazy"  .$row['riseimg'].'"   style="max-width:90%"怎么在function里操作pdo呀" ></div><ul>';<br />$result.='<li><a href="portfolio-single.html" class="view">测试1</a></li>';<br />$result.='<li><a href='.$row['headimg'].' class="preview" data-rel="prettyPhoto[web]">测试12</a></li></ul></div><div class="item-info">';<br />$result.='<h3 class="title">'.$row['ztname'].'</h3>';<br />$result.='<span class="category">'. $row['zttype'].'</span>';	<br />$result.='<p class="intro">1推荐日期:'.$row['zttime'].'</p></div></li>';<br />	}<br />return $result;<br />}

<?php<br />header("Content-Type:text/html;charset=utf-8");<br />$dbtype='mysql';<br />$host='127.0.0.1';<br />$dbName='nas';<br />$user='227227';<br />$pass='227227';<br />$db="$dbtype:host=$host;dbname=$dbName";<br />try{<br />$dbc=new PDO($db,$user,$pass);<br />$dbc->exec('SET CHARACTER SET utf8');<br />$dbc->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); //禁用prepared statements的仿真<br />	}catch(PDOException $e){<br />echo $e->getMessage();<br />}<br />?>

我想在function调用pdo 
是不是在pdo里面写class  function要继承这个类？

求大神出手指点该如何写！

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------解决方案--------------------
推荐看一下这个呀　　
http://php.xlxz.org/2013/11/370/

<?php<br /> <br />include 'sql_build_query.php';<br />include 'pdo_query.php';<br />$db     = new pdo_db;<br /> <br />$sql    = $db->pdo_query('show databases ');<br /> <br />var_dump( $sql, $db->dbVersion() );<br /> <br />exit;<br /> <br />$sql    = $db->select( 'i.kd k, io.id dk, iil.ii ds' )->from( 'test t' )<br />        ->leftjoin( 'post p', 't.id = ?', array( 2 ) )<br />        ->order( 'name DESC, id ASC'  )<br />        ->where( array( 'xin = ? AND do > ?' => array( 1,3 )))<br />        ->having( array('xin' => 'dkls' ))<br />        ->group( 'id' )<br />        ->limit( 3,4 )<br />        ->queryAll();<br />exit;<br />//var_dump( $sql );<br /> <br />$sql    = $db->from( 'test')<br />        ->insert( array( 'kd' => '233', 'dkwe' => 323 ));<br /> <br />$sql    = $db->from( 'test' )<br />        ->where( array( '( dk = ? and kd > ?) or ( dk = ? and ddd = ?)' => array( 2,3,5,4 )))<br />        ->limit( 2 , 4 )<br />        ->update( array( 'dkddl' => 'd', 'kdls' => 'dkdl' ));<br /> <br />$sql    = $db->from( 'test,test' )<br />        ->select( 'test,test' )<br />        ->where( array( 'id' => array( 3,3,4,2,3) ))<br />        ->limit( '3', 3)<br />        ->delete();

------解决方案--------------------

引用:

Quote: 引用:

包含pdo类文件，实例化类，给参数。

好的，另外我想请问下您，pdo如何拼接sql呀 比如where 1=1 and  tile=null 没有值就忽略掉

WHere后面随便拼 一个变量 需要的时候赋值就是了