不是路径不对而是没写对
<?php
$filename = '/data/webroot/usercode/resource/test.txt';
$fp = fopen("$filename", 'rb');
while(!feof($fp)) {
echo fgets($fp); //读取一行
}
fclose($fp);
或者：
<?php
$filename = '/data/webroot/usercode/resource/test.txt';
$content = file_get_contents("$filename");
echo $content;
