search
HomeBackend DevelopmentPHP TutorialCodeIgniter框架中_remap()使用方法2例_php实例

一、CodeIgniter手册相关介绍
URI 的第二片段决定会调用控制器中的哪个方法。CodeIgniter 允许你使用 _remap() 方法来废除这种规则:

复制代码 代码如下:
public function _remap() 

    // Some code here... 
}

注意:如果你的控制器中包含一个名为 _remap() 的方法,那么不管你的 URI 中包含什么,它总会被忽略掉。这个方法会废除掉由 URI 片段来决定哪个方法被调用的规则,允许你重新定义调用方法的规则(方法的路由规则)。
既可以通过example.com/index.php/ blog /   来调用_remap()的方法,若_remap()有参数,则在/后加参数,调用具体的代码。
二、使用方法2例
但问题是,手册上这样说的,会有什么用处呢?其实用处有两个:

1、改变URL,隐藏方法,比如你的应用中,原来的URL方法是: 

复制代码 代码如下:
example.com/index.php/blog/say

现在想改变显示的方法名为: 
复制代码 代码如下:
example.com/index.php/blog/hello

但显示虽然是hello,但实际上是调用存在的say方法
2、还可以借这个函数做简单的函数方法权限控制,比如:
复制代码 代码如下:
public function _remap($method, $params = array()) 

    $user_type = $_SESSION['user_type']; 
    $access_control = $this->validate_access($user_type,$method); 
    if ($access_control){ 
        $this->$method(); 
    } 
    else{ 
        $this->show_message(); 
    } 
}

首先取出用户session中的级别 $user_type,然后检查通过方法  validate_access这个用户有无权限调用这个方法($method) ,如果有的话$access_control==true了,否则显示出错信息。
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
What is the difference between unset() and session_destroy()?What is the difference between unset() and session_destroy()?May 04, 2025 am 12:19 AM

Thedifferencebetweenunset()andsession_destroy()isthatunset()clearsspecificsessionvariableswhilekeepingthesessionactive,whereassession_destroy()terminatestheentiresession.1)Useunset()toremovespecificsessionvariableswithoutaffectingthesession'soveralls

What is sticky sessions (session affinity) in the context of load balancing?What is sticky sessions (session affinity) in the context of load balancing?May 04, 2025 am 12:16 AM

Stickysessionsensureuserrequestsareroutedtothesameserverforsessiondataconsistency.1)SessionIdentificationassignsuserstoserversusingcookiesorURLmodifications.2)ConsistentRoutingdirectssubsequentrequeststothesameserver.3)LoadBalancingdistributesnewuser

What are the different session save handlers available in PHP?What are the different session save handlers available in PHP?May 04, 2025 am 12:14 AM

PHPoffersvarioussessionsavehandlers:1)Files:Default,simplebutmaybottleneckonhigh-trafficsites.2)Memcached:High-performance,idealforspeed-criticalapplications.3)Redis:SimilartoMemcached,withaddedpersistence.4)Databases:Offerscontrol,usefulforintegrati

What is a session in PHP, and why are they used?What is a session in PHP, and why are they used?May 04, 2025 am 12:12 AM

Session in PHP is a mechanism for saving user data on the server side to maintain state between multiple requests. Specifically, 1) the session is started by the session_start() function, and data is stored and read through the $_SESSION super global array; 2) the session data is stored in the server's temporary files by default, but can be optimized through database or memory storage; 3) the session can be used to realize user login status tracking and shopping cart management functions; 4) Pay attention to the secure transmission and performance optimization of the session to ensure the security and efficiency of the application.

Explain the lifecycle of a PHP session.Explain the lifecycle of a PHP session.May 04, 2025 am 12:04 AM

PHPsessionsstartwithsession_start(),whichgeneratesauniqueIDandcreatesaserverfile;theypersistacrossrequestsandcanbemanuallyendedwithsession_destroy().1)Sessionsbeginwhensession_start()iscalled,creatingauniqueIDandserverfile.2)Theycontinueasdataisloade

What is the difference between absolute and idle session timeouts?What is the difference between absolute and idle session timeouts?May 03, 2025 am 12:21 AM

Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

What steps would you take if sessions aren't working on your server?What steps would you take if sessions aren't working on your server?May 03, 2025 am 12:19 AM

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

What is the significance of the session_start() function?What is the significance of the session_start() function?May 03, 2025 am 12:18 AM

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor