Published on: April 22, 2025
Resource Profile:
本源码为一套轻量化PHP留言板系统，无需依赖数据库，适合个人网站、展示型页面等场景使用。整体结构简洁，便于用户快速部署，实现基本留言功能。
主要特性如下：
1.使用纯PHP编写，留言数据直接写入文本文件，避免复杂配置；
2.支持自定义留言数据保存文件，只需创建指定名称的文本文件；
3.表单提交后，将输入内容赋值给变量并处理，逻辑清晰；
4.判断目标文件是否存在，进行条件写入，确保数据存储安全；
5.写入文件前可选择访问模式，操作完成后务必关闭文件释放资源；
6.同样支持读取功能，展示留言内容，确保数据可追溯和可查看；
7.页面结构已进行基础美化，简洁易用，适合快速上线使用。
温馨提示：
在Windows环境下，如果使用 \n 换行可能无效，建议改用 \r\n 来确保文本文件中正常换行；而在Linux系统中，\n 即可实现换行效果。
该源码适合入门学习PHP文件读写操作，亦可用于小型留言功能模块的实际部署。
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