如何让Opera上传文件像其他浏览器一样？ [英] How do I make Opera upload files like other browsers?
问题描述
在Opera中使用< input type =file/> >上传一个文件时，它会按预期工作。也就是说，您可以在PHP服务器端的$ _FILES中找到预期的文件数据。
但是，当我尝试使用Opera一次性上传多个文件时，通过设置< input type =filemin =1max =999/> 然后所有文件的内容都粘在一个长字符串中并作为POST数据发送。这个字符串中的所有文件都被这样的标题分开：
------------ 94QV8HRqBwta8NY4L2WH0r
Content-Disposition：form-data; NAME = 文件[]; filename =xxx1069225496.xml
Content-Type：text / xml
<？xml>
...
我知道Opera遵循Webforms 2.0标准。但是，有没有一种简单的方法可以使Opera以与其他浏览器相同的方式发送多个文件，或者我必须编写一个解释器才能从Opera获取文件？
谢谢你的帮助。以下是我目前使用的HTML。
< div id = filearea >
< / div>
这是$ _POST的var_dump的外观我已经删除了任何实际的XML数据，占用了空间）
$ $ $ $ $ $ $ c $ array $ {
[file ] =>
array（1）{
[0] =>
string（4209）------------ 94QV8HRqBwta8NY4L2WH0r
Content-Disposition：form-data; name =file []; filename =1219854274.xml
Content-Type：text / xml
<？xml version =1.0？>
...
----- ------- 94QV8HRqBwta8NY4L2WH0r
Content-Disposition：form-data; name =file []; filename =xxx1069225496.xml
Content-Type：text / xml
<？xml version =1.0？>
...
------------ 94QV8HRqBwta8NY4L2WH0r
Content-处置：form-data; name =file []; filename =xxx1111008062.xml
Content-Type：text / xml
<？xml version =1.0？ >
...
------------ 94QV8HRqBwta8NY4L2WH0r
Content-Disposition：form-data; name =file []; filename =1219854274.xml
Content-Type：text / xml
<？xml version =1.0？>
...
}
}
I刚刚检查了一个PHP bug报告，并声称这在Opera中有效：
< input type =filename =filemin =1max =999/>
但这不是：
< input type =filename =file []min =1max =999/>
编辑：测试完这个之后，我相信将bug标记为伪造的PHP人员并不知道他在说什么......我无法用PHP自带任何一种工作方式。
据我所知，PHP不支持Opera的混合文件上传。这不是Opera的一部分，因为他们正按照RFC的规范来实现它。我相信其他浏览器只需上传文件，就好像有多个输入元素一样。您可以通过检查_POST数组轻松地添加对此的支持：
$ file = $ _POST ['file'] [0] ;
while（preg_match（'/ ^（ - + [A-Za-z0-9] +）\s + /'，$ file，$ matches））
{
$ id = $ matches [1];
$ i = strlen（$ matches [0]）;
$ body = false;
$ headers = array（）;
while（（$ j = strpos（$ file，\\\
，$ i））！== false）
{
$ line = substr（$ file，$ i， $ j - $ i）;
$ i = $ j + 1;
if（trim（$ line）==''）
{
$ body = true;
休息;
}
list（$ key，$ val）= explode（'：'，trim（$ line），2）;
$ headers [$ key] = trim（$ val）;
}
if（！$ body）break;
$ j = strpos（$ file，$ id，$ i）;
$ data = substr（$ file，$ i，$ j- $ i）;
echo $ data。< HR>; //也检查$ header
$ file = substr（$ file，$ j）;
}
在上面的代码中可能会有一些错误的错误。 p>
When uploading one file using <input type="file" /> in Opera, it works as expected. That is, you find the expected file data in $_FILES in PHP server side.
However, when I try to upload several files at once using Opera, by setting <input type="file" min="1" max="999" /> then all the files' contents are glued together in one long string and sent as POST data. All the files in this string are separated by headers such as this:
------------94QV8HRqBwta8NY4L2WH0r
Content-Disposition: form-data; name="file[]"; filename="xxx1069225496.xml"
Content-Type: text/xml
<?xml>
...
Opera follows the Webforms 2.0 standard, I know. But is there a simple way to make Opera send multiple files in the same fashion other browsers do, or will I have to write an interpreter to get files just from Opera?
Thanks for any help. Below is the HTML I'm currently using.
<div id="filearea">
<input type="file" min="1" max="6000" accept="text/xml" name="file[]" style="padding: 1px; margin: 2px 0px;" />
</div>
This is how the var_dump of $_POST looks (I've erased any actual XML data, taking up space)
array(1) {
["file"]=>
array(1) {
[0]=>
string(4209) "------------94QV8HRqBwta8NY4L2WH0r
Content-Disposition: form-data; name="file[]"; filename="1219854274.xml"
Content-Type: text/xml
<?xml version="1.0"?>
...
------------94QV8HRqBwta8NY4L2WH0r
Content-Disposition: form-data; name="file[]"; filename="xxx1069225496.xml"
Content-Type: text/xml
<?xml version="1.0"?>
...
------------94QV8HRqBwta8NY4L2WH0r
Content-Disposition: form-data; name="file[]"; filename="xxx1111008062.xml"
Content-Type: text/xml
<?xml version="1.0"?>
...
------------94QV8HRqBwta8NY4L2WH0r
Content-Disposition: form-data; name="file[]"; filename="1219854274.xml"
Content-Type: text/xml
<?xml version="1.0"?>
...
"
}
}
I just checked a PHP bug report, and it claimed that this works in Opera:
<input type="file" name="file" min="1" max="999" />
But that this does not:
<input type="file" name="file[]" min="1" max="999" />
Edit: After testing this, I believe the PHP person who marked the bug as bogus didn't know what he was talking about... I cannot get either way to work natively with PHP.
As far as I can tell, PHP does not support Opera's 'mixed' file uploads. This is not a bug on Opera's part, as they are implementing it per the RFC's specification. I believe the other browsers simply upload the files as if there were multiple input elements. You could easily add support for this by checking the _POST array:
$file = $_POST['file'][0];
while (preg_match('/^(-+[A-Za-z0-9]+)\s+/', $file, $matches))
{
$id = $matches[1];
$i = strlen($matches[0]);
$body = false;
$headers = array();
while (($j = strpos($file, "\n", $i)) !== false)
{
$line = substr($file, $i, $j - $i);
$i = $j + 1;
if (trim($line) == '')
{
$body = true;
break;
}
list($key, $val) = explode(':', trim($line), 2);
$headers[$key] = trim($val);
}
if (!$body) break;
$j = strpos($file, $id, $i);
$data = substr($file, $i, $j-$i);
echo $data."<HR>"; // also check $headers
$file = substr($file, $j);
}
There may be some off-by one errors in the above code.
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