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$fp = fopen('./text.txt', 'rb'); while(!feof($fp)) { echo fgets($fp); //读取一行 } fclose($fp);
好好学习，天天向上！！！
What is rb in fopen()l? What does the feof() function do? -PHP Chinese website Q&A-What is rb in fopen()l? What does the feof() function do? -PHP Chinese website Q&A
Please watch and learn.
fopen — 打开文件或者 URL，首先你不懂的应该是为什么是rb中的b，它是代表二进制的意思。只有r表示只读方式打开，rb表示只读方式打开一个二进制文件。feof — 测试文件指针是否到了文件结束的位置，打开文件读的时候，指针是一行一行的读的，所以要判断一下指针是否已经读到到了最后。
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
What is rb in fopen()l? What does the feof() function do? -PHP Chinese website Q&A-What is rb in fopen()l? What does the feof() function do? -PHP Chinese website Q&A
Please watch and learn.
fopen — 打开文件或者 URL，首先你不懂的应该是为什么是rb中的b，它是代表二进制的意思。只有r表示只读方式打开，rb表示只读方式打开一个二进制文件。feof — 测试文件指针是否到了文件结束的位置，打开文件读的时候，指针是一行一行的读的，所以要判断一下指针是否已经读到到了最后。