Thinkphp入门三—框架模板、变量(47)
【在控制器调用模板】
display() 调用当前操作名称的模板
display(‘名字’) 调用指定名字的模板文件
控制器调用模板四种方式:
【在控制器给模板传递变量】
在smarty里边给模板传递变量信息
$smarty -> assign(变量名称,值);
在tp框架里边同样适用assign()给模板传递变量信息
ThinkPHP的模板引擎的左右标记:
ThinkPHP/Lib/ Behavior/ ParseTemplateBehavior.class.php
修改TP模板引擎标记
修改模板引擎为Smarty
1 给模板传递变量信息两种方式:
$this -> assign(名称,值);
$this -> 名称 = 值;
可以修改TP模板引擎的左右标记
我们可以修改模板引擎为Smarty
2 在模板里边输出普通变量信息
3 在模板里边输出数组元素信息
1 {$hobby[下表]}
2 {$hobby.下表}
在模板里边输出对象的属性信息
{$ucenter->属性名称}
{$ucenter:属性名称}
【遍历数组信息】
两种方法:
foreach和volist可以嵌套遍历,最深层次是3层。
foreach(参数1 参数2 参数3)
volist(参数1 参数2 参数3)
name:模板数组变量名称
id:遍历出来的元素信息
key:元素下表信息(key i)
offset:输出数组偏移量
length:显示输出元素的个数
mod:对指定数字,取模
empty:数组为空输送指定信息
【普通for循环输出】
lt:less than 小于
gt:great than 大于
eq:equal 等于
elt:less equal 小于等于
egt:great equal 大于等于
heq:heng equal 恒等于
nheq:not heng equal 不恒等于
【条件判断结构】
if 判断
双路分支:
多路分支:
【范围判断】
in between
in标签使用
between标签使用
range标签使用(in和between集成标签)
【恒等于】

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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