本文实例讲述了基于Codeigniter框架实现的student信息系统站点动态发布功能。分享给大家供大家参考,具体如下:
既然是动态站点,肯定有数据库表的存在,在此不废话,下面我们来看一下数据库表:
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CREATE TABLE IF NOT EXISTS `student`(
//主键id
`id` int(11) NOT NULL AUTO_INCREMENT,
//学生姓名
`s_name` varchar(64) NOT NULL,
//学生家长的姓名
`p_name` varchar(64) NOT NULL,
//学生的家庭住址
`address` varchar(100) NOT NULL,
//所在城市
`city` varchar(30) NOT NULL,
//所在国家
`state` varchar(30) NOT NULL,
//所在地区的邮政编码
`zip` varchar(20) NOT NULL,
//电话
`phone` varchar(15) NOT NULL,
//邮件
`email` varchar(20) NOT NULL,
//主键设置
PRIMARY KEY(`id`)
)ENGINE=INNODB DEFAULT CHARSET=UTF8 AUTO_INCREMENT=1;
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*注:在此我有两个地方需要解释一下:
1."IF NOT EXISTS":如果数据在创建表的时候,在前面加上了"IF NOT EXISTS",那就表明即使此表已经存在,也会执行成功;
2."ENGINE=INNODB":这个是数据库的引擎设置,常用mysql数据库引擎有ISAM,MYISAM,HEAP等;
具体参考资料:http://baike.baidu.com/view/68455.htm
在创建完数据表之后,我们再来看一下数据库的连接。打开.\application\config\database.php文件,在内设置数据库变量参数,在.\application\config\config.php文件内设置基本的URL,对于我的基本url是:http://localhost/codeigniter/
下面我们来看看mvc思想架构的设计
首先打开.application\controllers\文件目录,在里面创建一个student.php控制器:
student.php
在此我们先来通过student这个控制器来测试一下,打印出helloworld,记住访问路径是:http://localhost/codeigniter/index.php/student/index
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class student extends CI_Controller{
//student controller construct
public function __construct(){
parent::__construct();
}
//index test function
public function index(){
echo "helloworld" ;
}
}
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it output: helloworld
下面我们来换一下,看看下面这段code:
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class student extends CI_Controller{
//student controller
public function __construct(){
parent::__construct();
}
//define a array,name is arraydata, it have three parameters
protected $arraydata = array (
'title' => 'Classroom:Home page' ,
'headline' => 'welcome to the classroom Mangement System' ,
'include' => 'student_index'
);
//index function
public function index(){
$this ->load->view( 'template' , $this ->arraydata);
}
}
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这段代码需要一个视图,template.php
template.php:
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<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Strict//EN' 'http://www.w3.org/TR/html4/strict.dtd' >
<html>
<head>
<meta http-equiv= 'Content-Type' content= 'text/html; charset=utf-8' >
<title><?php echo $title ; ?></title>
</head>
<body>
<h1><?php echo $headline ; ?></h1>
<?php $this ->load->view( $include )?>
</body>
</html>
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其中:
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this−>load−>view( include );
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包含的是另外一个视图文件studen_index.php文件
student_index.php:
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< p >Congratulations. Your initial setup is complete!</ p >
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联合输出:
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welcome to the classroom Mangement System
Congratulations. Your initial setup is complete!
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数据的CURD
C 控制器
先来看看数据的增加过程,在student控制器中增加一个add()方法
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class student extends CI_Controller{
//student controller
public function __construct(){
parent::__construct();
}
//new add function
public function add(){
$this ->load->helper( 'form' );
//display information for the view
$data [ 'title' ]= 'Classroom:Add Page' ;
$data [ 'headline' ]= 'Add data' ;
$data [ 'include' ]= 'student_add' ;
//upload view
$this ->load->view( 'template' , $data );
}
//create function
public function create(){
$this ->load->helper( 'url' );
$this ->load->model( 'MStudent' , '' ,TRUE);
$this ->MStudent->addData( $_POST );
redirect( 'student/add' , 'reflesh' );
}
//update function
public function update(){
//upload codeigniter library
$this ->load->library( 'table' );
$this ->load->model( 'MStudent' , '' ,TRUE);
$student_query = $this ->MStudent->updateData();
$update_table = $this ->table->generate( $student_query );
//display information for the view
$data [ 'title' ]= 'Classroom:Update Page' ;
$data [ 'headline' ]= 'Update Page' ;
$data [ 'include' ]= 'update_student' ;
$data [ 'updatetable' ]= $update_table ;
$this ->load->view( 'template' , $data );
}
//index function
public function index(){
$data [ 'title' ]= 'Classroom:Home page' ;
$data [ 'headline' ]= 'welcome to classroom Mangement System' ;
$data [ 'include' ]= 'student_index' ;
$this ->load->view( 'template' , $this ->arraydata);
}
}
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V 视图
template .php
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<html>
<head>
<title><?php echo $title ;?></title>
</head>
<body>
<h1><?php echo $headline ?></h1>
<?php $this ->load->view( $include )?>
</body>
</html>
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student_add.php
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<?php
echo form_open( 'student/create' );
$field_name = array ( 's_name' , 'p_name' , 'address' , 'city' , 'state' , 'zip' , 'phone' , 'email' );
foreach ( $field_name as $value ){
echo "<p>" . $value . ":"
echo form_input( array ( 'name' => $value ));
echo "</p>"
}
form_submit( '' , 'Add' );
form_close();
?>
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update_student.php
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<?php
echo $updatetable ;
?>
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M 模型
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class MStudent extends CI_Model{
public function addData( $data ){
$this ->db->insert( 'student' , $data );
}
public function updateData(){
$this ->db->get( 'student' );
}
}
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希望本文所述对大家基于CodeIgniter框架的PHP程序设计有所帮助。