环境 nginx + php-fpm
curl -v -I -H "Accept-Encoding: gzip,deflate" http://www.ihezhu.com/
* About to connect() to www.ihezhu.com port 80 (#0) * Trying 210.51.54.180... connected > HEAD / HTTP/1.1 > User-Agent: curl/7.22.0 (i686-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3 > Host: www.ihezhu.com > Accept: */* > Accept-Encoding: gzip,deflate > <p>但直接浏览器却没有看到输出Content-Encoding 大概怎么回事?<br> 谢谢</p><p>====update<br> 原因暂时还不明, 说下我做的测试<br> 用fiddler访问, <code>不输出</code><br> 用fiddler按照curl构造参数, <code>不输出</code><br> 用chrome插件模拟curl请求, <code>不输出</code><br> 在本机模拟了服务器配置一致的环境(php.ini, fastcgi, nginx.conf以及站点配置), <code>可以输出</code><br> 现在准备在curl中模拟browser的请求, 看看怎样</p> <h2 id="回复内容">回复内容:</h2> <p>环境 nginx + php-fpm</p><p><code>curl -v -I -H "Accept-Encoding: gzip,deflate" http://www.ihezhu.com/</code></p><pre class="brush:php;toolbar:false">* About to connect() to www.ihezhu.com port 80 (#0) * Trying 210.51.54.180... connected > HEAD / HTTP/1.1 > User-Agent: curl/7.22.0 (i686-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3 > Host: www.ihezhu.com > Accept: */* > Accept-Encoding: gzip,deflate > <p>但直接浏览器却没有看到输出Content-Encoding 大概怎么回事?<br> 谢谢</p><p>====update<br> 原因暂时还不明, 说下我做的测试<br> 用fiddler访问, <code>不输出</code><br> 用fiddler按照curl构造参数, <code>不输出</code><br> 用chrome插件模拟curl请求, <code>不输出</code><br> 在本机模拟了服务器配置一致的环境(php.ini, fastcgi, nginx.conf以及站点配置), <code>可以输出</code><br> 现在准备在curl中模拟browser的请求, 看看怎样</p> <p class="answer fmt" data-id="1020000000162404"> </p><p>建议你用wireshark抓包看看,可能只是chrome没显示这个出来。</p><p>感觉chrome的开发者工具不那么靠谱,比如显示出了 Transfer-Encoding: chunked,但是显示出来的却找不是原始的response(不是chunked的格式)。</p> <p class="answer fmt" data-id="1020000000162529"> </p><p>这个问题很有意思, 我猜是你在curl的时候, request headers提供的不足, 所以没有被CDN cache到.</p><p>但是在浏览器的情况下, request headers很完整, 所以CDN就起作用了, 既然CDN服务器节点靠近你自己的网络, 那么就不用压缩了, 直接返回给你明文, 跳过gzip节省浏览器解压时间, 加速网页响应.</p><p>我这么猜是因为response header里面有个Vary, 查了一下Vary的功能和CDN有关</p>

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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