本文实例讲述了php实现转换html格式为文本格式的方法。分享给大家供大家参考,具体如下:
有时候需要转换html格式的字符串为文本,但又需要保持一定的格式,比如要求段落变成的分段格式就可以用下面这个函数
function html2text($str){ $str = preg_replace("/<style .*?<\\/style>/is", "", $str); $str = preg_replace("/<script .*?<\\/script>/is", "", $str); $str = preg_replace("/<br \\s*\\/>/i", ">>>>", $str); $str = preg_replace("/<\\/?p>/i", ">>>>", $str); $str = preg_replace("/<\\/?td>/i", "", $str); $str = preg_replace("/<\\/?div>/i", ">>>>", $str); $str = preg_replace("/<\\/?blockquote>/i", "", $str); $str = preg_replace("/<\\/?li>/i", ">>>>", $str); $str = preg_replace("/ /i", " ", $str); $str = preg_replace("/ /i", " ", $str); $str = preg_replace("/&/i", "&", $str); $str = preg_replace("/&/i", "&", $str); $str = preg_replace("/</i", "<", $str); $str = preg_replace("/</i", "<", $str); $str = preg_replace("/“/i", '"', $str); $str = preg_replace("/&ldquo/i", '"', $str); $str = preg_replace("/‘/i", "'", $str); $str = preg_replace("/&lsquo/i", "'", $str); $str = preg_replace("/'/i", "'", $str); $str = preg_replace("/&rsquo/i", "'", $str); $str = preg_replace("/>/i", ">", $str); $str = preg_replace("/>/i", ">", $str); $str = preg_replace("/”/i", '"', $str); $str = preg_replace("/&rdquo/i", '"', $str); $str = strip_tags($str); $str = html_entity_decode($str, ENT_QUOTES, "utf-8"); $str = preg_replace("/&#.*?;/i", "", $str); return $str; }
PS:小编在这里推荐一款本站的php格式化美化的排版工具帮助大家在以后的PHP程序设计中进行代码排版:
php代码在线格式化美化工具:http://tools.bitsCN.com/code/phpformat
对于代码及编码转换感兴趣的朋友还可参考本站在线工具:
在线编码转换工具(utf-8/utf-32/Punycode/Base64):
http://tools.bitsCN.com/transcoding/decode_encode_tool
在线UBB/HTML代码转换工具:
http://tools.bitsCN.com/transcoding/ubb2html
中文繁体字简体字转换(繁简转换)工具:
http://tools.bitsCN.com/transcoding/convertzh
在线图片转换BASE64工具:
http://tools.bitsCN.com/transcoding/img2base64
更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP数组(Array)操作技巧大全》、《php排序算法总结》、《PHP常用遍历算法与技巧总结》、《PHP数据结构与算法教程》、《php程序设计算法总结》、《PHP数学运算技巧总结》、《php正则表达式用法总结》、《PHP运算与运算符用法总结》、《php字符串(string)用法总结》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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