[疑问]PHP js脚本路径,图片路径,样式路径的问题!
按道理这类常见问题自己找答案的,可是越看我越糊涂了。大家看看我的理解是否正确。
我自己写了一个单一入口的程序。就是说所有模块的Action都是走root/index.php。 后面加model名称和action名称和方法名称和参数名称。
index.php?model=user&action=Login&method=check
app:init(); // require_once: app.class.php
app里面获取model 和 action 然后动态执行Action类的方法如:
UserLoginAction.class.php
public function check(){
//如果成功则跳转
问题来了:跳转我这里用的是require_once admin_index.php ,因为有些变量我想在admin_index.php里面使用,所以没用重定向,我也没有更好的办法啊。这个不像JAVA可以将对象传递给JSP。 可以用$_SESSION['uservo'],但是我不习惯将一个东西用Session传递,所以就干脆直接include进来。但是问题就来了。
}
admin_index.php 里面的图片,CSS文件,JS文件 的路径怎么处理啊?
我现在没有办法了,全部用绝对路径直接写死来。
admin_index.php
如果用相对路径:$currentfolder = dirname(__FILE__); 也不是个办法啊? 你想想,所有的图片文件前面都加上一个
我能理解require 和 include 的方式,相当于把引入文件的代码复制到当前index.php文件里面。 所以被引入的文件里面的路径实际上是index.php的所在目录。 如果全部用绝对路径也不好啊(这是我的最后一招了)
dirname(__FILE__) 方法还有一个问题:这个返回的好像是文件物理路径啊。 这不是什么都给别人知道啦?
最后一招:全部用物理路径 ./ 表示当前路径相对于根目录index.php下:反正程序从开始到结束就相当于在一个文件里执行。 全部路径以 ./开头写死。
////////////////////////////////////////////////////
谁有更好的办法啊? 非常感谢。
------解决方案--------------------
不介意的话可以用 $_SERVER['DOCUMENT_ROOT'] 这个会比你用绝对路径强.
其实有很多方法。我自己还是用相对.当然有时候也会给路径搞得神经错乱,那么就修改include的方式,少给自己制造病例.
------解决方案--------------------
如果是自已写的框架,有两种方式处理:
一种是设全局变量或函数 如define('STYLE_PATH', 'xxxx'); 这个推荐,如果换服务器了,一改就可以分流。
第二是用base_url() ;取得你index.php文件的相对于根目录的路径。(这个只相对于程序内部, 实际上所有内部url都需要这个来构造)
这样,无论你入口在哪,程序都不会错。

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver CS6
Visual web development tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Dreamweaver Mac version
Visual web development tools