一般而言,网页传统方式的导入外部JS和CSS等资源文件的方法是直接在模板文件使用:
<script type='text/javascript' src='/Public/Js/Util/Array.js'> <link rel="stylesheet" type="text/css" href="/App/Tpl/default/Public/css/style.css" />
ThinkPHP的模板引擎提供了专门的标签来简化上面的导入。
1.import标签
第一个是import标签 ,导入方式采用类似ThinkPHP的import函数的命名空间方式,例如:
<import type='js' file="Js.Util.Array" />
Type属性默认是js, 所以下面的效果是相同的:
<import file="Js.Util.Array" />
还可以支持多个文件批量导入,例如:
<import file="Js.Util.Array,Js.Util.Date" />
导入外部CSS文件必须指定type属性的值,例如:
<import type='css' file="Css.common" />
上面的方式默认的import的起始路径是网站根目录下的Public目录,如果需要指定其他的目录,可以使用basepath属性,例如:
<import file="Js.Util.Array" basepath="./Common" />
如果导入的文件中含有“.”号,则可以采用:
<import file="Js.Util.Array#min" />
表示导入 /Public/Js/Util/Array.min.js 资源文件。
还支持资源文件的版本号导入,例如:
<import type='js' file="Js.Util.Array?v=120" />
在导入多个文件的时候也可以支持
<import type='js' file="Js.Util.Array?125,Js.Util.Date?130" />
improt标签支持判断加载,例如下面首先判断name变量是否设置:
<import type='js' file="Js.Util.Array" value="name" />
或者更复杂的,甚至可以采用函数:
<import type='js' file="Js.Util.Array" value="Think.get.name|isset" />
编译后的模板缓存是:
<?php if(isset($_GET['name'])): ?> <script type="text/javascript" src="/Public/Js/Util/Array.js"></script> <?php endif; ?>
2.load标签
第二个是load标签,通过URL方式导入当前项目的公共JS或者CSS,例如:
<load href="/Public/Js/Common.js" /> <load href="/Public/Js/Date.js?v=235" /> <load href="/Public/Css/common.css" />
在href属性中可以使用特殊模板标签替换,例如:
<load href="!-PUBLIC-!/Js/Common.js" />
Load标签无需指定type属性,系统会自动根据后缀自动判断。
当然,load标签也支持条件判断调用:
<load href="/Public/Js/Common.js" value="name" />
系统还提供了两个标签别名js和css 用法和load一致,例如:
<js href="/Public/Js/Common.js" /> <css href="/Public/Css/common.css" />
load标签也支持同时导入多个资源文件,甚至是不同类型的资源文件:
<load href="/Public/Js/Common.js,/Public/Css/common.css" />

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.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.


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