<?php
$ua = $_SERVER["HTTP_USER_AGENT"];
$filename = "中文文件名.txt";
$encoded_filename = urlencode($filename);
$encoded_filename = str_replace("+", "%20", $encoded_filename);
header("Content-Type: application/octet-stream");
if (preg_match("/MSIE/", $_SERVER['HTTP_USER_AGENT'])) {
header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
} elseif (preg_match("/Firefox/", $_SERVER['HTTP_USER_AGENT'])) {
header('Content-Disposition: attachment; filename*="utf8' . $filename . '"');
} else {
header('Content-Disposition: attachment; filename="' . $filename . '"');
}
echo "这里是文本 \n新的一行";
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