之前为了做 《plog.cn 1-6位 超期待删 短域名 筛查工具》,特地在 plog.cn 服务器上部署了一个 whois 查询小工具。PS:使用方法 http://plog.cn/whois/yourdomain.com
为了实现这个 whois 小工具,查了足足有两个小时的资料,网上有很多种 whois查询 的php实现,大致实现的思路无不例外以下几种:
1.通过http调用 xinnet或者是万网的 whois查询接口查询,而后将结果输出到页面,博客 http://blog.163.com/mengqing_dao/blog/static/133520513201162634227882/ 所描述的方法,就是这种最简单的,通过间接调用新网 whois查询接口的实现方法
2.直接通过读取 whois服务器,实现域名的查询。文章 http://dev.meettea.com/show-78-1.html 阐述的方法,就是根据被查询域名的后缀名,访问不同的 whois服务器,查询结果
对应的 域名后缀 -> whois 服务器 的映射关系大致如下:
'com'=>'whois.internic.net', 'net'=>'whois.internic.net', 'org'=>'whois.pir.org', 'asia'=>'whois.crsnic.net', 'cn'=>'whois.cnnic.net.cn', 'cc'=>'whois.nic.cc',对于这种方法,虽然实现起来很简单,但是对于在Godaddy.com平台或者是国内的厦门易名网注册的 域名来说,只能查到一个大概,而无法查到具体真正的 domain 的信息,如下:
在godday注册的域名的whois信息
在厦门易名网注册的域名的whois信息
所以,无论上面两种方法,都不能比较完善的实现 whois 的查询功能。
这时候 Jay感觉到,仅仅是 whois 这件小事,也需要用牛刀,我们需要一个完善 whois查询组件。
此时的 Jay立刻打开 google.com,搜索 php whois,果不其然!
在 百度中,搜了半天,出来的都是一些外门奇方,google一搜,就立马出现一套完整的 whois client 的 php 实现,项目名称就叫《phpWhois》,项目主页:http://www.phpwhois.org/ ,于是立马 download 下来,根据文档中的 demo,很快就把 whois 的查询功能实现了。
下面是调用 phpWhois 组件,实现 whois信息查询的核心代码部分:
<pre class="brush:php;toolbar:false"><?phpinclude('whois_inc/whois.main.php');$whois =newWhois();$result = $whois->Lookup($domain);$output = implode("\n", $result['rawdata']);echo $output;?>
在这里
标签的作用是定义预格式化的文本,就是将 whois 查询到的 raw text 按原来的文本排版格式直接输出。DomainName: lxfq.cnROID:20130114s10001s62921725-cnDomainStatus: okRegistrant ID:000046dbRegistrant:黎军RegistrantContactEmail:2673732891@qq.comSponsoringRegistrar:北京网尊科技有限公司NameServer: ns1.vtopchina.cnNameServer: ns2.vtopchina.cnRegistrationDate:2013-01-1404:02:16ExpirationDate:2014-01-1404:02:16DNSSEC:unsigned
总结:
whois虽然仅仅只是一种最简单的基于 tcp 的查询协议,但是很多工作,即便我们实现起来也非常简单,如果有现成的 php组件可以用的话,就应该尽量避免自己重复发明一个轮子。倒不是说不可以,只是重新实现一种协议,即便是最简单的那种,也会遇到很多的例外。
就像 phpWhois 组件,争对godaddy类似这种的例外情况,就处理的非常好。
所以,专业的事情,还是让专业的开源组件去实现吧!

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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