search
HomeBackend DevelopmentPHP TutorialThinkPHP3.1.3版本新特性概述_php实例

ThinkPHP3.1.3版本有一些特性,还是值得关注的,下面来简单说下。

1、异常方面的改进

新版的ThinkPHP3.1.3重写了异常类ThinkException(其实是完全简化成了直接继承系统Exception类),并且把异常逻辑改进封装到Think类中。主要涉及到Think类的appException方法和halt函数。
并且改进后的异常处理支持系统致命错误的捕获,Think类增加了fatalError方法,原理是使用了

register_shutdown_function(array('Think','fatalError'));

因此可以使得系统致命错误通过统一的异常模板界面友好提示。

2、对PDO参数绑定的支持

因为ThinkPHP3.*版本采用的是混合数据库驱动,同时也支持PDO方式,但之前版本并未针对PDO做优化,只是简单的封装。3.1.3版本完善了对PDO以及Sqlarv的支持,因为PDO和sqlsrv都支持参数绑定操作(注意,不支持参数绑定的数据库和驱动无法使用参数绑定功能)。

系统对参数绑定操作的支持分两种:自动绑定和手动绑定

自动绑定是对于写入操作(这里包括数据的新增和更新),框架会自动把相关数据转换成参数绑定方式执行,这个部分不需要额外处理,因为sqlsrv只有采用参数绑定的方式传值才能支持UTF8数据写入,但是每次写入数据都要采用手动参数绑定的话,就会显得比较麻烦。为了避免和手动参数绑定冲突,自动参数绑定采用的是对字段名md5编码的方式。

手动绑定,通常用于查询条件之类的,并且采用bind连贯操作方法,例如:

$model->where(array('id'=>':id','name'=>':name'))->bind(array(':id'=>$id,':name'=>$name))->select();


3、增加变量安全获取方法

之前版本通过Action类的_post _get等方法来安全获取变量,虽然没问题,但局限是只能在控制器中获取变量,新版把这一功能独立成一个快捷方法I,可以用于任何地方。
使用方法如下:

I('get.id',0); // 获取$_GET['id'] 如果不存在则默认为0
I('post.name','','htmlspecialchars'); // 获取$_POST['name'] 采用htmlspecialchars方法过滤
I('id'); // 获取id参数 自动判断get或者post
I('param.id'); // 获取id参数 自动判断get或者post 和上面用法等效
I('put.id'); // 获取put请求的id参数

还支持获取整个数组,例如:

I('get.'); // 获取$_GET数组
I('post.'); // 获取$_POST数组

在使用I方法的情况下,系统的VAR_FILTERS和DEFAULT_FILTER过滤配置依然有效。

4、where方法的多次调用

模型类的where方法可以支持数组方式的多次调用,例如:

$model->where(array('a'=>1,'c'=>2))->where(array('a'=>3,'b'=>1))->select();

多个where条件的时候,后面的条件会合并到前面的条件,最终的条件等效于:

$model->where(array('a'=>3,'b'=>1,'c'=>2))->select();


5、控制器中的assign方法支持连贯操作

我们可以在控制器使用:

$this->assign('name',$name)->assign('email',$email)->display();

或者:

$this->assign(array('name'=>$name,'email'=>$email))->display();

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

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: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

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 and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

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 and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

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.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

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 and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

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.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

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

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

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.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools