CI¿ò¼Ü³£Óþ­µä²Ù×÷Àà×ܽá(·ÓÉ,α¾²Ì¬,·ÖÒ³,session,ÑéÖ¤ÂëµÈ)

±¾ÎÄʵÀý×ܽaÁËCI¿o¼Ü³£Óþ­µa²Ù×÷Àa¡£*ÖÏi¸ø´o¼Ò¹(C)´o¼Ò²Î¿¼£¬¾ßÌaÈçÏ£º

1. ³¬¼¶¶ÔÏoÖеÄURI

CI_URIÀaµÄ½aÎourlµÄÏa¹ØÐÅÏ¢

Ö±½ÓʹÓÃ$this->uri¿ÉÒÔʹÓÃËuµÄÏa¹ØÊoÐÔ

system/core/URI.phpÎļþÖÐ

²¿*Ö³£ÓÃÊoÐÔ£º

(1) *ֶλñÈ¡urlÏa¹ØÐÅÏ¢

    $this->uri->segment(4);
    //»ñÈ¡urlÖÐpathinfo
    //µÄµÚËĶεÄÖµ

Èe¿ÚÎļþ.php/¿ØÖÆÆ÷/¶¯×÷/²ÎÊý1/²ÎÊý2/...

(2) ͨ¹ý½¨ÖеÄÐβδ«²Î

ÐeÒªÉeĬÈÏÖµºÍ˳ÐoҪעÒa

index.php/user/index/3/zhangsan

    public function index($id=0,$name=''){
      echo $id,$name;
    }

2.CI¿ØÖÆÆ÷µÄÀ(C)Õ¹

ÔÚapplication/core/Îļþ¼ÐÏÂÃae

Ìi¼Ó×Ô¼ºµÄÀ(C)Õ¹¿ØÖÆÆ÷

    class MY_Controller extends CI_Controller{
      public function __construct(){
       parent::__construct
      }
    }

ÅaÖÃÄ£ÐÍǰ׺

    $config['subclass_prefix']='MY_';//ĬÈÏÖµ

3.Ä£Ð͵ÄÏa¹Ø²Ù×÷

ÎļþÃuȫСд£¬ÀaÃuÊ××Öĸ´oд

½¨ÒeÀaÃu¼ÓÉÏ _modelºo׺

ÔÚ¿ØÖÆÆ÷ÖмÓÔØÄ£ÐÍ£º

ÔÚconstructÖмÓÈe£º

    $this->load->model('User_model');
    $this->User_model->get();

ΪģÐÍÆð±ðÃu

    $this->load->model('User_model','user');
    $this->user->get();

4.urlÖеij£Óú¯Êý

(1)°iÖuÎÒÃÇÉu³É¿ØÖÆÆ÷

    $this->load->helper('url');
    site_url('¿ØÖÆÆ÷/*½*¨');

(2)ͼƬÂ*¾¶µÄʹÓÃ

    $this->load->helper('url');

    <img src="<?php echo base_url();?>upload/a.jpg" />

¿ÉÒÔÔÚautoload.phpÖÐÅaÖÃ×Ô¶¯¼ÓÔØ

$autoload['helper']¼ÓÈeurl

*5. CIÖеÄÂÓÉÓeα¾²Ì¬**

(1) Â*ÓÉα¾²Ì¬

    $router['show/([\d]+)\.html']='article/show/$1';
    article/show/5.html => article/show/5;

(2) Òþ²ØÈe¿ÚÎļþ

    #¿ªÆoapacheµÄrewriteÄ£¿e
    #ÔÚ¸uĿ¼ÖÐ*ÅÈe.htaccessÎļþ½øÐÐÖØд
    RewriteEngine on
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^(.*)$ index.php/$1 [QSA,PT,L]

*6. CIÖеÄÖÒ³**

    //Ä£ÐÍÖвÙ×÷
    //×°ÔØ*ÖÒ³ÀaÎļþ
    $this->load->library('pagination');
    $this->load->helper(url);
    //*ÖÒ³Á´½Ó
    $config['base_url'] = site_url('user/test');
    //×ܼǼÌoÊý
    $config['total_rows'] = 100;
    //ÿҳÏÔʾ10ÌoÊý¾Ý
    $config['per_page'] = 10;
    //Æ«ÒÆÁ¿
    $offset_limit = intval($this->uri->segment(3));
    $this->pagination->initialize($config);
    echo $this->pagination->create_links();

*ÖÒ³Öа´Å¥µÄ¶¨ÖÆ(×¢ÒaÔÚ³oʼ»¯Ö®Ç°ÅaÖúÃ)

    $config['first_link'] = 'Ê×Ò³';
    ...
    $config['uri_segment'] =3;//*ÖÒ³Êý¾Ý²eѯƫÒÆÁ¿

ÔÚurlµÄÄÄÒ»¶ÎÉÏ£¬¶ÔÓ¦ÉÏÃaeµÄ$offset

ĬÈÏÊÇ3£¬*ñÔoÐeÒªÐ޸ĶÔÓ¦Öµ

7. CI ÖÐsessionµÄʹÓÃ

    //¼ÓÔØsession¿a
    $this->load->library('session');

(1)»ñȡϵͳsession

    //±ÈÈç»ñÈ¡¿Í»§¶ËµÄipµØÖ*
    $this->session->userdata('ip_address');

(2) Ìi¼Ó×Ô¶¨Òasession

    //Ìi¼Ó
    $this->session->set_userdata('some_name', 'some_value');
    //»ñÈ¡
    $this->session->userdata('some_name');
    //ɾ³ý
    $this->session->unset_userdata('some_name');

(3)ÉÁ³oÊý¾Ý £¨È¡³oÒ»´ÎºoʧЧ£(C)

    //Ìi¼Ó
    $this->session->set_flashdata('item', 'value');
    //»ñÈ¡
    $this->session->flashdata('item');

µÇ¼Êý¾ÝÖÐ *µ»ØµÇ¼ǰµÄÄÇÒ»¸oÒ³ÃaeµÄurl¿ÉÒԼǼÏÂÀ´£¬

×¢Òa£ºÒ»´ÎÐÔµÄÊý¾Ý£¬¶ÁÈ¡Ò»´Îºo»a×Ô¶¯Ïu»Ù¡£

ΪÁËȱ£°²È«£¬ÔÚconfig.phpÉu³ÉËae»u¼ÓÃܵÄ×Öu´®ÖмÓÈe

    $config['encryption_key']="fjkdsffjkhjd#kjh";

ÊÇ*ñÒª½«cookie¼ÓÃÜ

    $config['sess_encrypt_cookie'] =TRUE;

8. CIÖеÄÎļþÉÏ´«

    <form action="<?php echo site_url('user/upload');?>" enctype="multipart/form-data">
     <input type="file" name="pic"/>
     <input type="submit" value="submit">
    </form>

ÉÏ´«´¦Ài£º

    $config['upload_path']="./upload";
    $config['allowed_types']='gif|jpeg|jpg';
    $this->load->library('upload',$config);
    $this->upload->do_upload('pic');

ÎļþÉÏ´«µÄÊý¾Ý

    $filedata = $this->upload->data();

9. CIÖеÄÑeÖ¤Âe

    //Éu³ÉÑeÖ¤Âe
    $this->load->helper('captcha');
    $this->load->helper('url');
    $vals = array(
      'word'=>rand(1000,9999),
      'img_path'=>'./captcha/',
      'img_url'=>base_url().'/captcha/'
      'img_width'=>'150',
      'img_height'=>'100',
      'expiration'=>7200
    );
    $cap = create_captcha($vals);
    echo $cap['image'];
    //½«ÑeÖ¤Âe»ñÈ¡µÄÊý×Ö*ÅÔÚsessionÖÐ
    session_start();
    $_SESSION['cap'] = $cap['word'];

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