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PHP访问MySql数据库 中级篇 Smarty技术

阅读本文之前,推荐先参阅《PHP访问MySql数据库 初级篇》。

Smarty是一个使用PHP语言写出来的模板引擎,是目前业界最著名的PHP模板引擎之一。它分离了逻辑代码和外在的内容,将原本与HTML代码混杂在一起PHP代码进行了分离。从而使PHP程序员同网站的前端程序员可以达到良好的分工——PHP程序员改变程序的逻辑内容不会影响到前端人员的页面设计,前端人员重新修改页面的样式也不会影响到程序的程序逻辑,这使得多人合作的项目变得尤为轻松和易于管理维护。正因为Smarty有这么多的优点,所以国内各大公司在网站编程时均采用这种编程方法。Smarty的手册可以访问http://www.smarty.net/docs/en/index.tpl。

 

下面是Smarty程序的一个小范例,功能上与初级篇相同——从MySql的test数据库中的t_student读取数据然后显示。程序共分为5个文件,分别为smarty2.php、smarty2.html、smarty2_head.php、smarty2.js和smarty2.css。此外程序要引用Smarty和JQuery的库文件。

1.smarty2_head.php文件

<?php 
// by MoreWindows( http://www.zzzyk.com )  


define(DB_HOST, 'localhost'); 
define(DB_USER, 'root'); 
define(DB_PASS, '111111'); 
define(DB_DATABASENAME, 'test'); 
define(DB_TABLENAME, 't_student'); 
 
$dbcolarray = array('id', 'name', 'age'); 
?> 
<?php
// by MoreWindows( http://www.zzzyk.com )

define(DB_HOST, 'localhost');
define(DB_USER, 'root');
define(DB_PASS, '111111');
define(DB_DATABASENAME, 'test');
define(DB_TABLENAME, 't_student');

$dbcolarray = array('id', 'name', 'age');
?>
2.smarty2.php文件

<?php 
// by MoreWindows( http://www.zzzyk.com )  


header("Content-Type: text/html; charset=utf-8"); 
require('../../smart_libs/Smarty.class.php'); 
require_once('smarty2_head.php'); 
date_default_timezone_set("PRC"); 
 
//mysql_connect  
$conn = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("connect failed" . mysql_error()); 
mysql_select_db(DB_DATABASENAME, $conn); 
 
//表中记录条数  
$sql = sprintf("select count(*) from %s", DB_TABLENAME); 
$result = mysql_query($sql, $conn); 
if ($result) 

    $dbcount = mysql_fetch_row($result); 
    $tpl_db_count = $dbcount[0]; 

else 

    die("query failed"); 

 
//表头  
$tpl_db_coltitle = $dbcolarray; 
 
//表中的内容  
$tpl_db_rows = array(); 
$sql = sprintf("select %s from %s", implode(",",$dbcolarray), DB_TABLENAME); 
$result = mysql_query($sql, $conn); 
while ($row = mysql_fetch_array($result, MYSQL_ASSOC))//与$row=mysql_fetch_assoc($result)等价  
    $tpl_db_rows[] = $row; 
 
mysql_free_result($result); 
mysql_close($conn); 
 
$tpl = new Smarty; 
$tpl->assign('db_count', $tpl_db_count); 
$tpl->assign('db_coltitle', $tpl_db_coltitle); 
$tpl->assign('db_rows', $tpl_db_rows); 
$tpl->display('smarty2.html'); 
?> 
<?php
// by MoreWindows( http://www.zzzyk.com )
header("Content-Type: text/html; charset=utf-8");
require('../../smart_libs/Smarty.class.php');
require_once('smarty2_head.php');
date_default_timezone_set("PRC");

//mysql_connect
$conn = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("connect failed" . mysql_error());
mysql_select_db(DB_DATABASENAME, $conn);

//表中记录条数
$sql = sprintf("select count(*) from %s", DB_TABLENAME);
$result = mysql_query($sql, $conn);
if ($result)
{
 $dbcount = mysql_fetch_row($result);
 $tpl_db_count = $dbcount[0];
}
else
{
 die("query failed");
}

//表头
$tpl_db_coltitle = $dbcolarray;

//表中的内容
$tpl_db_rows = array();
$sql = sprintf("select %s from %s", implode(",",$dbcolarray), DB_TABLENAME);
$result = mysql_query($sql, $conn);
while ($row = mysql_fetch_array($result, MYSQL_ASSOC))//与$row=mysql_fetch_assoc($result)等价
 $tpl_db_rows[] = $row;

mysql_free_result($result);
mysql_close($conn);

$tpl = new Smarty;
$tpl->assign('db_count', $tpl_db_count);
$tpl->assign('db_coltitle', $tpl_db_coltitle);
$tpl->assign('db_rows', $tpl_db_rows);
$tpl->display('smarty2.html');
?>
3.smarty2.html文件

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<link href="smarty2.css" rel="stylesheet" type="text/css" media="all" /> 
<script type="text/javascript" src="../jquery-1.7.min.js"></script> 
<script type="text/javascript" src="smarty2.js"></script> 
<title>{$smarty.const.DB_TABLENAME}</title> 
</head> 
<body> 
<h1>表中有{$db_count}条记录</h1> 
<table border="1" align="center" cellpadding="10" cellspacing="2" bordercolor="#ffaaoo"> 
{foreach $db_coltitle as $col} 
    <th>{$col}</th> 
{/foreach} 
{foreach $db_rows as $dbrow} 
    <tr> 
    {foreach $dbrow as $k=>$val} 
        <td>{$val}</td> 
    {/foreach} 
    </tr> 
{/foreach} 
</table> 
</body> 
</html> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link href="smarty2.css" rel="stylesheet" type="text/css" media="all" />
<script type="text/javascript" src="../jquery-1.7.min.js"></script>
<script type="text/javascript" src="smarty2.js"></script>
<title>{$smarty.const.DB_TABLENAME}</title>
</head>
<body>
<h1>表中有{$db_count}条记录</h1>
<table border="1" align="center" cellpadding="10" cellspacing="2" bordercolor="#ffaaoo">
{foreach $db_coltitle as $col}
    <th>{$col}</th>
{/foreach}
{foreach $db_rows as $dbrow}
    <tr>
    {foreach $dbrow as $k=>$val}
        <td>{$val}</td>
    {/

补充:Web开发 , php ,
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