在我的函数中,我正在下载一个文件,将下载文件保存到日志文件中。每当我尝试下载我上传的Excel文件时,Excel都会声明它已损坏。我的本地副本工作正常。这是我的download.php:PHP readfile()破坏文件
<?php
include_once 'includes/db_connect.php';
include_once 'includes/functions.php';
sec_session_start();
ob_start();
?>
<?php if (login_check($mysqli) == true) :?>
<?php
$logFile = "download.log";
$directory = "./downloads/";
date_default_timezone_set('America/New_York');
$filename = $_GET['file'];
$path = "$directory$filename";
if(file_exists($path) AND substr_count($filename,"/") == "0") {
if (isset($logFile)) {
$downloadLogRecord = $filename." || ".$_SESSION['name']." || ".$_SESSION['username']." || ".$_SERVER['REMOTE_ADDR']." || ".date('Y-m-d H:i:s')."\r\n";
@file_put_contents($logFile,$downloadLogRecord,FILE_APPEND|LOCK_EX);
}
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=$filename");
header("Content-Length: ".filesize($path));
readfile("$path");
}
?>
<?php else : ?>
<p>
<span class="error">You are not authorized to access this page.</span> Please <a href="index.php">login</a>.
</p>
<?php endif; ?>
我该如何解决这个问题?
你ob_start会缓冲输出;但除非您在某个时间点刷新缓冲区,否则在脚本终止导致损坏时''>''和'<?php'之间的空白仍会被注入到文件中 –