php如何生成可下载的txt文件_php设置header强制下载与内容编码处理

$filename = "data.txt";
$content = "这里是需要写入文件的内容";

// 清除缓冲区，防止额外输出
ob_clean();
 
header('Content-Type: text/plain');
header('Content-Disposition: attachment; filename="' . $filename . '"');
header('Content-Length: ' . strlen($content));
header('Connection: close');

echo $content;
exit;

$filename = "报告.txt";
$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';

if (strpos($userAgent, 'MSIE') !== false || strpos($userAgent, 'Trident') !== false) {
    // IE浏览器
    $encodedFilename = rawurlencode($filename);
} elseif (strpos($userAgent, 'Firefox') !== false) {
    // Firefox
    $encodedFilename = '=?UTF-8?B?' . base64_encode($filename) . '?=';
} else {
    // 其他浏览器（Chrome、Safari等）
    $encodedFilename = mb_convert_encoding($filename, 'UTF-8', 'auto');
}

header('Content-Disposition: attachment; filename="' . $encodedFilename . '"; filename*=UTF-8\'\'' . rawurlencode($filename));

$data = [
    ['ID', '姓名', '邮箱'],
    [1, '张三', 'zhang@example.com'],
    [2, '李四', 'li@example.com']
];

$csvContent = '';
foreach ($data as $line) {
    $csvContent .= implode("\t", $line) . "\n"; // 用制表符分隔
}

$filename = '用户列表.txt';

header('Content-Type: text/plain; charset=UTF-8');
header('Content-Disposition: attachment; filename="' . rawurlencode($filename) . '"; filename*=UTF-8\'\'' . rawurlencode($filename));
header('Content-Length: ' . strlen($csvContent));
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Connection: close');

echo $csvContent;
exit;