อยากรู้หลักการออกแบบโปรแกรมของ wordpress จะเอามาประยุกต์ใช้ค่ะ

$arr = array('abc', 'bcd', 'cde');

function have_posts()
{
global $arr;

return count($arr);
}

function the_posts()
{
global $arr;

return array_pop($arr);
}

<?PHP
class report {
	 
	public $group_id,$group_sid;
	
	function __construct(){
		$this->group_id  = @$_REQUEST['gid'];
		$this->group_sid = @$_REQUEST['gsid'];	
	}
   
   
    public function get_group_name($group_id){
		$sql = "select * from tb_group where group_sub_status ='1' and group_id='" .$this->group_id. "' ";   
    	$q= mysql_query($sql);
			while ($r= mysql_fetch_array($q)){
			list($gsid, $gid ,$gsname ,$gs_status ,$g_sub_date)=$r;
			 echo "<table width=\"99%\" height=\"40\" border=\"1\" align=\"center\" cellpadding=\"2\" cellspacing=\"0\">";
			 echo"<tr>
					<td valign=\"top\" bgcolor=\"#999999\" id=\"borderpjt\">
					<strong><a href=\"index.php?name=report&gsid=$gsid&gid=$gid\">$gsname</a></strong> 
					</td>
				</tr>";
			 echo "</table>";
			}
	}
}

<?php the_permalink()?>
<?php the_title(); ?>
<?php the_content('');?>

for (Somclass::get_members() as $member)
{
 echo '<a href="#" rel="'.$member['id'].'">'.$member['name'].'</a>', "\n";
}

<?php
if(!defined("DIGCO_VERSION")) exit('No access allowed');
// Class App
class App
{
	function __construct()
	{
		//
	}
	function connectdb($host,$user,$pw,$db)
	{
		$conn = @mysql_connect($host,$user,$pw);
		if($conn)
		{
			$rsdb=$this->selectdb($db);
			if(!$rsdb)
			{
				echo $this->_err(mysql_error());
			}
		}
		else
		{
			echo $this->_err(mysql_error());
		}
	}
	function selectdb($db)
	{
		$sldb=mysql_select_db($db);
		if($sldb)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	function _err($str)
	{
		$str="<p style='color:red;'>$str</p>";
		return $str;
	}
	function query($sql)
	{
		mysql_query("SET NAMES utf8");
		$rs=mysql_query($sql);
		if($rs)
		{
			return $rs;
		}
	}
	function gettheme()
	{
		$rs=$this->query("Select set_theme From tb_setting");
		if(mysql_num_rows($rs)==0)
		{
			return false;
		}
		else
		{
			$f=mysql_fetch_array($rs);
			return $f['set_theme'];
		}
	}
	function perpage()
	{
		$rs=$this->query("Select set_posts_per_page as pages From tb_setting");
		if(mysql_num_rows($rs)==0)
		{
			$page=1;
		}
		else
		{
			$f=mysql_fetch_array($rs);
			if($f['pages']=="" || is_numeric($f['pages'])==false)
			{
				$page=1;
			}
			else
			{
				$page=$f['pages'];
			}
		}
		return $page;
	}
	function links($id="",$table="",$title="")
	{
		$rs=$this->query("Select set_mod_rewrite as re From tb_setting");
		if(mysql_num_rows($rs)==0)
		{
			$re=false;
		}
		else
		{
			$f=mysql_fetch_array($rs);
			if($f['re']=="y")
			{
				$re=true;
			}
			else
			{
				$re=false;
			}
		}

		$sql = "Select long_url,short_url From ".$table." Where id='".$id."'";
		$rslink=$this->query($sql);
		if(mysql_num_rows($rslink)==0)
		{
			return "<a href=\"#\">$title</a>";
		}
		else
		{
			$flink=mysql_fetch_array($rslink);
			if($re==true)
			{
				return "<a href=\"".$flink['long_url'].".html\">".$title."</a>";
			}
			else
			{
				return "<a href=\"".$flink['short_url']."\">".$title."</a>";
			}
		}		
	}
}
?>

<?php
if(!defined("DIGCO_VERSION")) exit('No access allowed');
// function.inc.php 
function nav()
{
	global $app;
	$rs = $app->query("Select * From tb_pages order by page_id");
	$nav="<ul>";
	$nav.="<li><a href=\"./\">HOME</a></li>";
	while($r=mysql_fetch_array($rs))
	{
		$nav.="<li><a href=\"index.php?mod=page&id=".$r['page_id']."\">".$r['title']."</a></li>";
	}
	$nav.="</ul>";
	return $nav;
}
function title()
{
	global $app;
	$rs=$app->query("Select set_title From tb_setting");
	if(mysql_num_rows($rs)==0){
		return "DIGCO BLOG CMS";
	}
	else
	{
		$f=mysql_fetch_array($rs);
		return $f['set_title'];
	}
}
function description()
{
	global $app;
	$rs=$app->query("Select set_description From tb_setting");
	if(mysql_num_rows($rs)==0){
		return "DIGCO BLOG CMS";
	}
	else
	{
		$f=mysql_fetch_array($rs);
		return $f['set_description'];
	}
}
function keywords()
{
	global $app;
	$rs=$app->query("Select set_keyword From tb_setting");
	if(mysql_num_rows($rs)==0){
		return "digco,cms,digco thai cms,cms thai,cms ไทย,cms คนไทย,cms สายพันธุ์ไทย";
	}
	else
	{
		$f=mysql_fetch_array($rs);
		return $f['set_keyword'];
	}
}
function base_url()
{
	global $app;
	$rs=$app->query("Select set_url From tb_setting");
	if(mysql_num_rows($rs)==0){
		return "http://localhost/digco2";
	}
	else
	{
		$f=mysql_fetch_array($rs);
		return $f['set_url'];
	}
}
function showtheme()
{
	global $app;
	$theme=$app->gettheme();
	if($theme)
	{
		$gett=$theme;
	}
	else
	{
		$gett="default";
	}
	return require_once('theme/'.$gett.'/index.php');
}
function theme()
{
	global $app;
	$theme=$app->gettheme();
	if($theme)
	{
		$gett=$theme;
	}
	else
	{
		$gett="default";
	}
	$theme ='theme/'.$gett;
	return $theme;
}
function category()
{
	global $app;
	$str = "<ul>";
	$str.="<h3>Category</h3>";
	$rs=$app->query("Select * From tb_categories");
	if(mysql_num_rows($rs)==0){
		$str.="<li>- - - - - - ไม่มีหมวดหมู่ - - - - - -</li>";
	}
	else
	{
		while($f=mysql_fetch_array($rs))
		{
			$str.="<li><a href=\"index.php?mod=category&id=".$f['cat_id']."\">".$f['cat_name']."</a></li>";
		}
	}
	$str.="</ul>";
	return $str;
}
function form_search()
{
	return '<form method="POST" action="?mod=search"><input type="text" name="txtsrch" value="Search..." /></form>';
}
function tag()
{
	global $app;
	$types=array();
	$rs=$app->query("Select tag From tb_posts");
	if(mysql_num_rows($rs)>0)
	{
		while($ftypes = mysql_fetch_array($rs))
		{
			$types = array_merge($types, explode(",", $ftypes[0]));
		}

		$types = arr_unique_comp($types);
		
		echo"<ul>";
		echo"<h3>Tags</h3>";
		echo"<li>";
		for($i=0;$i<count($types);$i++)
		{
			echo '<a href="index.php?mod=tag&id='.$types[$i].'">'. $types[$i].'</a>';
			if($i<count($types)-1) echo ",\n";
		}
		echo"<li>";
		echo"</ul>";
	}
}
function arr_unique_comp($a){
  $tmparr = array_unique($a);
  $i=0;
  foreach ($tmparr as $v) {
    $newarr[$i] = $v;
    $i++;
  }
  return $newarr;
}
function content()
{
	global $app;
	$get=isset($_GET['mod'])?$_GET['mod']:'';
	$id=isset($_GET['id'])?$_GET['id']:'';
	switch($get)
	{
		case post:
			$sql="Select * From tb_posts where id='$id'";
			$rs=$app->query($sql);
			if(mysql_num_rows($rs)==0)
			{
				return "ไม่พบข้อมูล";
			}
			else
			{
				$f=mysql_fetch_array($rs);
				$str="<h2>".$app->links($f['id'],"tb_posts",$f['title'])."</h2>";
				$str.=$f['body'];
			}
			return $str;
			break;
		case page:
			$page = $app->perpage();
			$sql="Select * From tb_pages where page_id='$id'";
			$rs=$app->query($sql);
			if(mysql_num_rows($rs)==0)
			{
				return "ไม่พบข้อมูล";
			}
			else
			{
				while($f=mysql_fetch_array($rs))
				{
					$str="<h2>".$f['title']."</h2>";
					$str.=$f['body'];
				}
				return $str;
			}
			break;
		case category:
			$page = $app->perpage();
			$sql="Select * From tb_posts where cat_id='$id' Order by postdate DESC,id DESC";
			$rs=$app->query($sql);
			if(mysql_num_rows($rs)==0)
			{
				return "ไม่พบข้อมูล";
			}
			else
			{

				while($f=mysql_fetch_array($rs))
				{
					$str="<h2>".$app->links($f['id'],"tb_posts",$f['title'])."</h2>";
					echo $f['shot_body'];
					echo "<div style='border-bottom:1px dashed #D1D1D1;width:630px;height:10px;'></div>";
				}

			}
			break;
		case tag:
			$page = $app->perpage();
			$sql="Select * From tb_posts where tag like '%$id%' Order by postdate DESC,id DESC";
			$rs=$app->query($sql);
			if(mysql_num_rows($rs)==0)
			{
				return "ไม่พบข้อมูล";
			}
			else
			{
				echo"<h2>TAG : $id<?h2>";

				while($f=mysql_fetch_array($rs))
				{
					$str="<h2>".$app->links($f['id'],"tb_posts",$f['title'])."</h2>";
					echo $f['shot_body'];
					echo "<div style='border-bottom:1px dashed #D1D1D1;width:630px;height:10px;'></div>";
				}

			}
			break;
		default:
			$page = $app->perpage();
			$sql="Select * From tb_posts Order by postdate DESC,id DESC Limit 0,$page";
			$rs=$app->query($sql);
			if(mysql_num_rows($rs)==0)
			{
				return "ไม่พบข้อมูล";
			}
			else
			{
				while($f=mysql_fetch_array($rs))
				{
					$str="<h2>".$app->links($f['id'],"tb_posts",$f['title'])."</h2>";
					$str.=$f['body'];
				}
				return $str;
			}
			break;
	}
}
?>

<?php
if(!defined("DIGCO_VERSION")) exit('No access allowed');
require_once('config.inc.php');
require_once('classapp.inc.php');
require_once('function.inc.php');
$app = new App();
$app->connectdb(DB_HOST,DB_ROOT,DB_PW,DB_NAME);
showtheme();
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
	<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
	<meta name="description" content="<?php echo description();?>">
	<meta name="keywords" content="<?php echo keywords();?>">
	<link rel="stylesheet" type="text/css" href="<?php echo base_url()?>/<?php echo theme();?>/css/style.css" />
	<title><?php echo title();?></title>
</head>
<body>
<div id="wrapper">
	<div id="header"><h1><a href="./" title="<?php echo title();?>"><img src="<?php echo theme();?>/images/logo.png" alt="<?php echo title();?>" border="0"/></a></h1></div>
	<div id="nav"><?php echo nav();?><div id="search"><?php echo form_search();?></div></div>
	<div id="banner"></div>
	<div id="content">
		<div id="main">
			<div id="main-head"></div>
				<div id="list-content"><?php echo content();?></div>
			<div id="main-bt"></div>
		</div>
		<div id="menu">
			<div id="menu-head">&nbsp;</div>
			<div id="m-menu">
				<?php echo category();?><br/>
				<?php echo tag();?>
			</div>
			<div id="menu-bt">&nbsp;</div>
		</div>
	</div>
</div>
<div id="footer"><p>&copy 2010 | DIGCO BLOG CMS <span>Power by <a href="http://www.kalamell.com">DIGCO BLOG CMS</a> | Design by <a href="http://www.kalamell.com"/>DIGCO THEME DEFAULT</a></span></p></div>
</body>
</html> 

//css
html,body{ margin:0px;padding:0px;}
body{font-family:serif;background:#FFFFFF;text-align:center;}
#wrapper{
	width:960px;
	margin:0 auto;
	padding:0 auto;
	background:#FFFFFF;
	text-align:left;
}
#header{
	margin:0px;
	padding:0px;
	width:960px;
	height:60px;
	background:#FFFFFF;
}
#header h1{
	margin:0px;
	padding:0px;
}
#header h1 a{
	color:#FFFFFF;
	text-decoration:none;
}
#nav{
	margin:0px;
	padding:0px;
	margin-top:20px;
	width:960px;
	height:31px;
	background:url('../images/nav.png') no-repeat;
	position:relative;
}
#nav #search{
	width:269px;
	height:24px;
	right:3px;
	top:3px;
	position:absolute;
	background:url('../images/search.png') no-repeat;
}
#nav #search form{
	margin:0px;
	padding:0px;
}
#nav #search form input{
	margin:3px;
	padding:0px;
	background:#191010;
	border:0px;
	width:250px;
	height:18px;
	color:#FFFFFF;
}
#nav ul{
	margin:0px;
	margin-left:20px;
	padding:0px;
	list-style:none;
}
#nav ul li{
	display:inline;
	font-weight:bold;
}
#nav ul li a{
	float:left;
	display:block;
	color:#FFFFFF;
	text-decoration:none;
	padding:6px;
}
#nav ul li a:hover{
	color:#414141;
	background:#FFFFFF;
}
#banner{
	width:960px;
	padding:0px;
	margin:0pt;
	height:212px;
	background:url('../images/bgbanner.png') no-repeat;
	margin-top:10px;
	float:left;
}
#content{
	width:960px;
	background:#FFFFFF;
	margin:0px;
	padding:0px;
	margin-top:10px;
	float:left;
}
#content #main{
	width:660px;
	background:url('../images/main-bg.png') repeat-y;
	margin:0px;
	padding:0px;
	margin-bottom:10px;
	float:left;
}
#content #main #list-content{
	width:640px;
	margin:0px;
	padding-left:10px;
	float:left;
	font-size:14px;
}
#content #main #list-content h2{
	margin:0px;
	padding:0px;
	padding-bottom:10px;
	color:darkgreen;
	font-size:22px;
}
#content #main #list-content h2 a{
	text-decoration:none;
	color:darkgreen;
}
#content #main #list-content h2 a:hover{
	text-decoration:underline;
	color:darkgreen;
}
#content #main #main-head{
	width:660px;
	height:10px;
	margin:0px;
	padding:0px;
	background:url('../images/main-top.png') no-repeat;
	float:left;
}
#content #main #main-bt{
	width:660px;
	height:10px;
	margin:0px;
	padding:0px;
	background:url('../images/main-bt.png') no-repeat;
	float:left;
}

#content #menu{
	width:280px;
	background:url('../images/menu-bg.png') repeat-y;
	float:right;
	margin:0px;
	padding:0px;
	margin-bottom:10px;
	margin-left:20px;
}
#content #menu #m-menu{
	width:270px;
	padding:10px;
	margin:0px;
}
#content #menu #m-menu ul{
	width:260px;
	margin:0px;
	padding:0px;
	margin-bottom:10px;
	list-style:none;
}
#content #menu #m-menu ul h3{
	margin:0px;
	padding:0px;
	padding-bottom:5px;
	color:darkgreen;
	border-bottom:1px solid #C4C4C4;
}
#content #menu #m-menu ul li{
	font-size:13px;
	margin:0px;
	padding:2px;
}
#content #menu #m-menu ul li a{
	text-decoration:none;
}
#content #menu #m-menu ul li a:hover{
	text-decoration:none;
	padding-left:2px;
}
#content #menu #menu-head{
	width:280px;
	height:10px;
	margin:0px;
	padding:0px;
	background:url('../images/menu-top.png') no-repeat;
	float:right;
}
#content #menu #menu-bt{
	width:280px;
	height:10px;
	margin:0px;
	padding:0px;
	background:url('../images/menu-bt.png') no-repeat;
	float:right;
}
#footer{
	clear:both;
	margin:0 auto;
	padding:0 auto;
	width:960px;
	height:50px;
	margin-bottom:30px;
	background:url('../images/footer.png') no-repeat;
	text-align:left;

}
#footer p{
	padding-top:20px;
	padding-left:120px;
	color:#FFFFFF;
	font-size:11px;
}
#footer p span{
	margin-left:370px;
}
#footer p span a{
	text-decoration:none;
	color:#FFFFFF;
}
#footer p span a:hover{
	text-decoration:underline;
	color:#C2C2C2;
}