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:
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;
*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
class student extends CI_Controller{
//student controller construct
public function __construct(){
parent::__construct();
}
//index test function
public function index(){
echo "helloworld";
}
}
it output: helloworld
下面我们来换一下,看看下面这段code:
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);
}
}
这段代码需要一个视图,template.php
template.php:
<!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>
其中:
this−>load−>view(include);
包含的是另外一个视图文件studen_index.php文件
student_index.php:
<p>Congratulations. Your initial setup is complete!</p>
联合输出:
welcome to the classroom Mangement System
Congratulations. Your initial setup is complete!
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
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);
}
}
V 视图
template .php
<html>
<head>
<title><?php echo $title;?></title>
</head>
<body>
<h1><?php echo $headline ?></h1>
<?php $this->load->view($include)?>
</body>
</html>
student_add.php
<?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();
?>
update_student.php
<?php
echo $updatetable;
?>
M 模型
class MStudent extends CI_Model{
public function addData($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。