Home Backend Development PHP Tutorial readfile文件下载有关问题,如有有效解决方法,加分结贴

readfile文件下载有关问题,如有有效解决方法,加分结贴

Jun 13, 2016 am 10:08 AM
content file header quot readfile

readfile文件下载问题,如有有效解决办法,加分结贴
大家好,现在我们的项目遇到了一个比较困扰的问题。使用readfile下载图片文件时,文件会文件首会比原来多出一位(0x0A)来,使用UEdit删除文件首的那个16进制位文件可正确读出。

源代码如下:

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php $file = 'test_img.bmp';if (file_exists($file)) {    header('Content-Description: File Transfer');    header('Content-Type: application/octet-stream');    header('Content-Disposition: attachment; filename='.basename($file));    header('Content-Transfer-Encoding: binary');    header('Expires: 0');    header('Cache-Control: must-revalidate');    header('Pragma: public');    header('Content-Length: ' . filesize($file));    ob_clean();    flush();    readfile($file);    exit;}?>
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下载后的文件和原文件比较如下:


代码在以前的服务器上运行从未出现问题,但当我们的项目更换了运行支撑环境(操作系统/apache/php 版本均有可能不同),在网上查遍了所有的文档,无解决办法。求高手解决此问题,在此先感谢大家了!

如有有效解决办法,将给您加分结贴。


------解决方案--------------------
楼上广告。。。

readfile读取的文件里是否有这个0a呢?
------解决方案--------------------
那既然知道,多出的字符串,就截取掉就好啦
------解决方案--------------------
0a-换行符号-"\n";看下你们那个读取文件的编码是不是gbk的,有些文件含有bom头,建议看可否改为utf-8格式的;你看你们的读取文件里是否有换行符号;或者对读取的内容直接trim()一下呢
------解决方案--------------------
探讨

0a-换行符号-"\n";看下你们那个读取文件的编码是不是gbk的,有些文件含有bom头,建议看可否改为utf-8格式的;你看你们的读取文件里是否有换行符号;或者对读取的内容直接trim()一下呢
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