<?php $file_path = "test.txt"; if (file_exists($file_path)) { $fp=fopen($file_path, "a+"); $con=fread($fp, filesize($file_path)); echo $con; }else { echo "文件不存在"; } fclose($fp);?><?php $file_path = "test.txt"; $con=file_get_contents($file_path); $con=str_replace("\r\n","<br/>",$con); echo $con;?>
Length parameter must be greater than 0
参数的长度必须大于0
显然你的 test.txt 是空的
当然是这样最好啦
$file_path = "test.txt";$con = trim(file_get_contents($file_path));echo $con;
下面那种要简洁点
下面的要好点，上面的fread有各种限制
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
