本文讲述了ThinkPHP模板替换与系统常量及应用,是ThinkPHP项目开发的基础知识,有必要加以牢固掌握。具体如下:
默认的模板替换规则:
../Public : 会被替换成当前项目的公共模板目录 通常是 / 项目目录 /Tpl/default/Public/
__PUBLIC__ :会被替换成当前网站的公共目录 通常是 /Public/
__TMPL__ : 会替换成项目的模板目录 通常是 / 项目目录 /Tpl/default/
__ROOT__ : 会替换成当前网站的地址(不含域名)
__APP__ : 会替换成当前项目的 URL 地址 (不含域名)
__URL__ : 会替换成当前模块的 URL 地址(不含域名)
__ACTION__ :会替换成当前操作的 URL 地址 (不含域名)
__SELF__ : 会替换成当前的页面 URL
还可以通过在项目配置文件中配置TMPL_PARSE_STRING的值来自定义替换规则,如:
TMPL_PARSE_STRING => array( '__PUBLIC__' => '/Common' , // 更改默认的 __PUBLIC__ 替换规则 '__UPLOAD__' => '/Public/Uploads/' , // 增加新的上传路径替换规则 )
示例:
文件路径:/Home/Tpl/default/User/index.html,代码如下:
<p>__ROOT__代表当前网站的网址</p> <p>__URL__代表当前模块的URL地址/index.php/User</p> <p>../Public代表/aoli/Tpl/default/Public</p> <p>__PUBLIC__代表项目公共文件目录/Public</p> <p>__TMPL__代表当前项目的模板目录/aoli/Tpl/default/</p> <p>__APP__代表当前项目的入口文件地址/index.php</p> <p>__ACTION__代表当前的操作地址/index.php/User/index</p> <p>__SELF__代表当前URL地址/index.php/User/</p> <p>__UPLOAD__</p> <form action="__URL__/add" method="post"> <input type="text" name="username" /> <input type="submit" value="注册" /> </form>
文件路径:/Home/Lib/Action/UserAction.class.php,代码如下:
<?php class UserAction extends Action { function index(){ $this->display(); } function add(){ dump($_POST); } } ?>
访问路径:http://localhost/index.php/User/index输入内容,点击注册按钮后跳转到http://localhost/index.php/User/add并执行User模块下的add方法,输出提交的内容。
希望本文所述对大家的ThinkPHP程序设计有所帮助。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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