CI

1:ci框架是有入口文件的,前端和后台入口文件(index.php,admin.php);里面修改$application_folder = 'application/home';

2:项目基本都是在application里面的,home(前端)和admin(后台);

3:home文件夹下的config文件下面的routes.php($route['default_controller'] = 'article';),config.php($config['base_url'] = 'http://localhost/Ci';在上传服务器的时候改为$config['base_url'] = '/';还需要在最后加入时区设置:date_default_timezone_set('PRC');$config['time_zone'] = date_default_timezone_get(););

注意:Linux系统设置只能识别PRC,// date_default_timezone_set('Asia/ShangHai');不识别Asia/ShangHai,所以设置的时候注意:

4:controller是写控制器的,注意:

(1):文件名必须是大写字母开头,如:'Blog.php';文件保存到 application/controllers/ 目录下 
(2):类名必须以大写字母开头。

model是写模型的,view是放视图的;

5:ci框架需要注意的一些细节问题:

define('IS_POST',strtolower($_SERVER["REQUEST_METHOD"]) == 'post');[自定义设置IS_POST方法]

$this->load->helper(array('form','url'));[加载辅助函数]
$this->load->library('session');[加载sessions]
$this->load->database();[加载连接数据库]

$this->load->view('article/add')[加载视图]

6:form表单提交:

($this->load->library('form_validation');

$this->form_validation->set_rules('pname','用户账号','required|max_length[10]');
$this->form_validation->set_rules('ppwd','密码','required');
$this->form_validation->set_rules('ypwd','确认密码','required|matches[ppwd]');
$this->form_validation->set_rules('pemail','邮箱','required|valid_email');
if($this->form_validation->run()==false){
$this->load->view('zhuce/index');
})

$arr=$this->input->post();[ci框架接受post提交数据]

7:ci框架加载连接数据库,查询数据:

($this->load->database();
$query=$this->db->get_where('ci_people',array('pname'=>$arr['pname']));
$res=$query->result();)

8:路径跳转问题

echo "<script>window.location.href='".site_url('Zhuce/index')."'</script>";[不加参数跳转]

echo "<script>window.location.href='".site_url('Zhuce/index/{$uid}')."'</script>";[加参数跳转]

9:加载模型

$this->load->model('Zhuce_model');
$res=$this->Zhuce_model->edit($arr);

10:ci框架地址栏获取参数

$aid=$this->uri->segment(3);[1是控制器,2是方法,3是值]

11:session存储和删除

$this->session->set_userdata('pname',$val->pname);[存储session];

$this->session->unset_userdata('plast_login',$val->plast_login);[删除session];

12:文件上传:

$arr=$this->input->post();
//文件上传:
$config['upload_path']="./public/uploads/";
$config['allowed_types']='jpg|gif|png|jpeg';
$config['file_name']=uniqid(time());
$config['max_size']=1024;
$config['max_height']=768;
$config['max_width']=1024;
$config['overwrite']=FALSE;
$this->load->library('upload',$config);
if(!file_exists($config['upload_path'])){
mkdir($config['upload_path'],0777,true);
}
if($this->upload->do_upload('pimg')){//上传表单图片的name名
$file=$this->upload->data();//返回上传文件信息
$arr['pimg']=$file['file_name'];
}else{
//图片上传失败报错:
$error=$this->upload->display_errors();
$error=strip_tags($error);
echo "<script>alert('".$error."')</script>";
echo "<script>window.location.href='".site_url('Ziliao/edit')."'</script>";
}

13:视图:view

<font color="red"><?php echo form_error('atitle'); ?></font>[表单报错]

视图字段截取

<td class='text-center'><?php if(strlen($val->aabs)>8){
echo mb_substr($val->aabs,0,8)."...";
}else{
echo $val->aabs;
} ?></td>

原文地址:https://www.cnblogs.com/houdj/p/7927383.html