Table of Contents
需求
模拟
正常做法
木有biggerFly
传送门
Home Backend Development PHP Tutorial PHP-木有biggerFly 1、用匿名函数让表单数据处理变得炫酷

PHP-木有biggerFly 1、用匿名函数让表单数据处理变得炫酷

Jun 20, 2016 pm 12:30 PM

关于木有biggerFly这是木木的第一个PHP系列biggerFly翻译过来就是逼格飞~起,因为是PHP,所以这里就是驼峰命名就像名字表达的含义一样,这个系列教你怎么把PHP用得逼格飞起当然有一些也是我曾经以为逼格飞起但是结果然并卵的木木的脑洞一直都……所以,最后我会对这些代码进行一些评价,不想看木木疯的,可以跳转别的系列,传送门在末尾那么进入第一期的正题

需求

接收表单数据,格式化处理它们,然后插入数据库

模拟

假设表单提交过来的数据为

$postData = [  ['name' => 'name1', 'createtime' => '2000-01-01', 'email' => 'email1@example.com' ],  ['name' => 'name2', 'createtime' => '2000-02-01', 'email' => 'email2@example.com' ],  ['name' => 'name3', 'createtime' => '2000-03-01', 'email' => 'email3@example.com' ],  ['name' => 'name4', 'createtime' => '2000-04-01', 'email' => 'email4@example.com' ],];
Copy after login

正常做法

function format( $data ) {  $format = $data;  $format['createtime'] = strtotime( $data['createtime'] );  return $format;}
Copy after login

当然上面的也可以换成引用,引用可以减少内存的开销哦~

木有biggerFly

(剧本载入中……)木木:我不想写那么多format方法,这次提交表单要写一个format,下次另一个地方也要一个format,每次都定义一个,好麻烦啊,有没有。如果还有一个验证用的validate方法,或者别的abc方法……天啊,饶了我吧biggerFly:要不试一试匿名函数?木木:哈?匿名函数是什么鬼?biggerFly:匿名函数传送门在此,走你木木:好晕,你直接告诉我,要怎么做吧……biggerFly:

class A {  public $data = NULL;  public $format = NULL;  /**  * 执行  */  public function run() {    foreach ( $this->data as $key => &$data ) {      if ( is_callable( $this->format ) ) {        $method = $this->format;//必须赋值给一个变量,不然会报错:format方法不存在        $method( $data );      }    }  }  /**  * 设置data数组  * @param array $data  */  public function setData( $data ) {    $this->data = $data;    return $this;  }  /**  * 获取data数组  * @return array  */  public function getData() {    return $this->data;  }}
Copy after login

木木:所以呢?怎么用biggerFly:以模拟为例子

$a = new A();$a->setData( $postData );$a->format = function( &$data ) {  $data['createtime'] = strtotime( $data['createtime'] );};$a->run();var_dump( $a->getData() );
Copy after login

运行结果略,这里会把二维数组$postData的createtime的日期格式转化为时间戳biggerFly:通过这样的方式,只要在A类里定义一些常用的方法,就可以写不需要重复定义函数,比如一些常用的规则解释

  • is_callable传送门。如果严谨一点,可以加一个is_array的判断,确保是函数
  • 这样可以省去很多额外的函数定义,一些常用的比如format、validate方法直接内嵌在A类里就好了
  • 同时每一个需要格式化表单数据的脚本可能就少引用了很多类,比如,如果你要检测字符串格式是不是邮箱,你可能要在每个表单处理的地方调用一个String类,有了A类,你就可以只需要一个A,把所有这种引用的写在A里就好了
  • 这些处理表单数据的函数本来就是一次性的(这些format方法难道还适用别的表单数据处理咩?),所以,用匿名函数也比较符合它的含义
  • 不觉得高大上咩?

其他

  • 通过这样的处理,你可能还可以写出如下类似的代码,这里就不把实现写出来了,对着格式很容易就可以完成的
    $a->validate = function( &$data ) {$data['email'] = array( 'email', 'unique' );$data['name'] = array( 'required', 'unique' );$data['createtime'] = array( 'datetime', function($time) {    if ( strtotime( $time ) >= time() ) {      return false;    } else {      return true;    }  } );};
    Copy after login
  • 匿名函数在php原生函数里经常出现,它们也被叫做回调函数,想要了解更多匿名函数,建议参考手册以及相关评论匿名函数```

    传送门

    往期PHP-数组我的小说灵音万年
Statement of this Website
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

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

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1663
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
Explain different error types in PHP (Notice, Warning, Fatal Error, Parse Error). Explain different error types in PHP (Notice, Warning, Fatal Error, Parse Error). Apr 08, 2025 am 12:03 AM

There are four main error types in PHP: 1.Notice: the slightest, will not interrupt the program, such as accessing undefined variables; 2. Warning: serious than Notice, will not terminate the program, such as containing no files; 3. FatalError: the most serious, will terminate the program, such as calling no function; 4. ParseError: syntax error, will prevent the program from being executed, such as forgetting to add the end tag.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values ​​to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

What are HTTP request methods (GET, POST, PUT, DELETE, etc.) and when should each be used? What are HTTP request methods (GET, POST, PUT, DELETE, etc.) and when should each be used? Apr 09, 2025 am 12:09 AM

HTTP request methods include GET, POST, PUT and DELETE, which are used to obtain, submit, update and delete resources respectively. 1. The GET method is used to obtain resources and is suitable for read operations. 2. The POST method is used to submit data and is often used to create new resources. 3. The PUT method is used to update resources and is suitable for complete updates. 4. The DELETE method is used to delete resources and is suitable for deletion operations.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

Explain the difference between self::, parent::, and static:: in PHP OOP. Explain the difference between self::, parent::, and static:: in PHP OOP. Apr 09, 2025 am 12:04 AM

In PHPOOP, self:: refers to the current class, parent:: refers to the parent class, static:: is used for late static binding. 1.self:: is used for static method and constant calls, but does not support late static binding. 2.parent:: is used for subclasses to call parent class methods, and private methods cannot be accessed. 3.static:: supports late static binding, suitable for inheritance and polymorphism, but may affect the readability of the code.

How does PHP handle file uploads securely? How does PHP handle file uploads securely? Apr 10, 2025 am 09:37 AM

PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.

See all articles