


I am currently working on a website for HTML5 music playback, and I want to make my iPhone and iPad better. Cool, the front end uses jplayer, a plug-in of jquery, and the effect is pretty good after modification. The background uses PHP to collect Baidu's MP3 regularly. Considering that my server space is tight, of course I can only collect MP3 addresses, and the files are not downloaded locally. Considering that the Baidu MP3 path often changes, it is really annoying, so it is necessary to regularly judge whether the MP3 path is still correct, so there is a soft article about PHP judging whether the remote file exists. I started using the get_headers() method, but later I heard that there was an efficiency problem, so I didn’t use this solution. But by the way, let’s take a look at the effect of the get_headers function:
Result: Array ( [0] => HTTP/1.1 200 OK [1] => Date: Thu, 02 Jun 2011 02:47:27 GMT [2] => Server: Apache [3] => P3P: CP=" OTI DSP COR IVA OUR IND COM " [4] => Set-Cookie: BAIDUID=7F6A5A2ED03878A7791C89C526966F3A:FG=1; expires=Fri, 01-Jun-12 02:47:27 GMT; max-age=31536000; path=/; domain=.baidu.com; version=1 [5] => Last-Modified: Thu, 20 Jan 2011 07:15:35 GMT [6] => ETag: "65e-49a41e65933c0" [7] => Accept-Ranges: bytes [8] => Content-Length: 1630 [9] => Cache-Control: max-age=315360000 [10] => Expires: Sun, 30 May 2021 02:47:27 GMT [11] => Connection: Close [12] => Content-Type: image/gif )
result: Array ( [0] => HTTP/1.1 200 OK [Date] => Thu, 02 Jun 2011 02:49:28 GMT [Server] => Apache [P3P] => CP=" OTI DSP COR IVA OUR IND COM " [Set-Cookie] => BAIDUID=4D875812FC482C0ADE4F5C17068849EE:FG=1; expires=Fri, 01-Jun-12 02:49:28 GMT; max-age=31536000; path=/; domain=.baidu.com; version= 1 [Last-Modified] => Thu, 20 Jan 2011 07:15:35 GMT [ETag] => "65e-49a41e65933c0" [Accept-Ranges] => bytes [Content-Length] => 1630 [Cache-Control] => max-age=315360000 [Expires] => Sun, 30 May 2021 02:49:28 GMT [Connection] => Close [Content-Type] => image/gif ) How about it? The get_headers function is pretty good, but since there is a problem with efficiency, we have to give it no priority. Curl is pretty good. Let’s take a look at how curl works.
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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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