最近正在做一个js版本的markdown解析库,打算将网上比较流行的一个名为Parsedown的库完整的迁移到js上,这样前后端就有相同的展现效果了,但是我发现它的原作者在使用正则时用到了递归,但js正则又是不支持递归的,所以寻求一个解决方法能完美迁移,下面是PHP代码,注意preg_match
部分
protected function identifyLink($Excerpt) { $extent = $Excerpt['text'][0] === '!' ? 1 : 0; if (strpos($Excerpt['text'], ']') and preg_match('/\[((?:[^][]|(?R))*)\]/', $Excerpt['text'], $matches)) {
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最近正在做一个js版本的markdown解析库,打算将网上比较流行的一个名为Parsedown的库完整的迁移到js上,这样前后端就有相同的展现效果了,但是我发现它的原作者在使用正则时用到了递归,但js正则又是不支持递归的,所以寻求一个解决方法能完美迁移,下面是PHP代码,注意preg_match
部分
protected function identifyLink($Excerpt) { $extent = $Excerpt['text'][0] === '!' ? 1 : 0; if (strpos($Excerpt['text'], ']') and preg_match('/\[((?:[^][]|(?R))*)\]/', $Excerpt['text'], $matches)) {
Github 官方出了个解析脚本,何必还自己去写
https://github.com/jgm/stmd
下载 js 下面那个 stmd.js 就是
看看这个,php-to-js https://github.com/Danack/PHP-to-Javascript

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Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.

Tracking user session activities in PHP is implemented through session management. 1) Use session_start() to start the session. 2) Store and access data through the $_SESSION array. 3) Call session_destroy() to end the session. Session tracking is used for user behavior analysis, security monitoring, and performance optimization.

Using databases to store PHP session data can improve performance and scalability. 1) Configure MySQL to store session data: Set up the session processor in php.ini or PHP code. 2) Implement custom session processor: define open, close, read, write and other functions to interact with the database. 3) Optimization and best practices: Use indexing, caching, data compression and distributed storage to improve performance.

PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.


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