以往版本的ThinkPHP中页面输出的过程是读取模板文件,然后进行模板解析(也支持调用第三方模板引擎解析),但是有一些情况,我们并没有定义模板文件,或者把模板文件保存在数据库里面,那么这种情况下进行页面输出的时候,我们是无法进行模板文件读取的,ThinkPHP3.1版本则针对这样的情况增加了内容解析输出的功能。
内置的模板引擎也进行了完善,如果传入的模板文件不存在的话,则会认为是传入的模板解析内容,因此,ThinkPHP3.1版的View类和Action类也做了一些相应的改进。
display方法用于模板文件渲染输出,show方法则用于模板内容渲染输出,并且show方法仍然支持内容解析功能,因此,我们可以在控制器中这样使用:
$this->assign('name','ThinkPHP'); $this->show('hello,{$name}!');
页面输出的结果是:
hello,ThinkPHP!
你也可以采用读取数据库的方式:
$content = M('Data')->where($map)->getField('content'); $this->show($content);
对于$content变量中的内容,可以和模板文件一样支持变量和标签库的解析,并且也可以支持模板布局功能。
show方法也可以指定输出编码和类型,例如:
$this->show($content,'utf-8','text/xml');
总之,有了show方法后,可以把模板放数据库中,对于模板的管理和更新也更加方便了。

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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