Why I need to set the memory limit for large file upload?

[howa]

Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?

If I want to upload 100 MB, how large should I set?

Thanks.

[The Natural Philosopher]

howa wrote:

Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?

If I want to upload 100 MB, how large should I set?

Thanks.

Because all files are held in memory before being output to disk.

[Jerry Stuckle]

howa wrote:

Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?

If I want to upload 100 MB, how large should I set?

Thanks.

You shouldn't have to increase the memory limit, but you'll probably
have to increase file upload size (in your webserver or html).

PHP doesn't get involved in the actual upload. Just after the upload
has completed. And moving the file doesn't require reading it into memory.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[howa]

On 11$B7n(B30$BF|(B, $B>e8a(B9$B;~(B19$BJ,(B, Jerry Stuckle <[e-mail]:

howa wrote:

Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?

If I want to upload 100 MB, how large should I set?

Thanks.

You shouldn't have to increase the memory limit, but you'll probably
have to increase file upload size (in your webserver or html).

In the doc: http://us3.php.net/manual/en/feature...n-pitfalls.php

it said: if a memory limit is enabled, a larger memory_limit may be
needed. Make sure you set memory_limit large enough.

this is quite confusing, as it doesn't said how much you need to set
the memory limit

Thanks anyway.
howa

[Piotr Siudak]

howa pisze:

On 11$B7n(B30$BF|(B, $B>e8a(B9$B;~(B19$BJ,(B, Jerry Stuckle <[e-mail]:

>howa wrote:

>>Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?
If I want to upload 100 MB, how large should I set?
Thanks.

You shouldn't have to increase the memory limit, but you'll probably
have to increase file upload size (in your webserver or html).

In the doc: http://us3.php.net/manual/en/feature...n-pitfalls.php

it said: if a memory limit is enabled, a larger memory_limit may be
needed. Make sure you set memory_limit large enough.

this is quite confusing, as it doesn't said how much you need to set
the memory limit

depends on your config

for example
if you have "always poputale raw post data" enabled you need enough to
fit "raw post data" to one of the variables.

--
Piotr Siudak

[Jerry Stuckle]

howa wrote:

On 11$B7n(B30$BF|(B, $B>e8a(B9$B;~(B19$BJ,(B, Jerry Stuckle <[e-mail]:

>howa wrote:

>>Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?
If I want to upload 100 MB, how large should I set?
Thanks.

You shouldn't have to increase the memory limit, but you'll probably
have to increase file upload size (in your webserver or html).

In the doc: http://us3.php.net/manual/en/feature...n-pitfalls.php

it said: if a memory limit is enabled, a larger memory_limit may be
needed. Make sure you set memory_limit large enough.

this is quite confusing, as it doesn't said how much you need to set
the memory limit

Thanks anyway.
howa

Quite frankly, I don't know. The file itself isn't posted; it comes in
a separate request. And AFAIK, the server handles the upload into the
temporary directory. Even if it doesn't, I wouldn't expect PHP to read
the entire file in before saving it.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[Rik Wasmus]

On Fri, 30 Nov 2007 19:44:20 +0100, Jerry Stuckle
<js*******@attglobal.netwrote:

howa wrote:

>On 11月30日, 上�9時19分, Jerry Stuckle <[e-mail]:

>>howa wrote:
Suppose the file is stored in "upload_tmp_dir ", so why I need to
increase the memory limit?
If I want to upload 100 MB, how large should I set?
Thanks.
You shouldn't have to increase the memory limit, but you'll probably
have to increase file upload size (in your webserver or html).

In the doc:
http://us3.php.net/manual/en/feature...n-pitfalls.php

it said: if a memory limit is enabled, a larger memory_limit may be
needed. Make sure you set memory_limit large enough.

this is quite confusing, as it doesn't said how much you need to set
the memory limit

Thanks anyway.
howa

Quite frankly, I don't know. The file itself isn't posted; it comes in
a separate request. And AFAIK, the server handles the upload into the
temporary directory. Even if it doesn't, I wouldn't expect PHP to read
the entire file in before saving it.

Indeed. The mentioned 'raw post data' is also not populated with HTTP
file-uploads:
<http://nl2.php.net/manual/en/ini.core.php#ini.always-populate-raw-post-data>
"Always populate the $HTTP_RAW_POST_DATA containing the raw POST data.
Otherwise, the variable is populated only with unrecognized MIME type of
the data. However, the preferred method for accessing the raw POST data is
php://input. $HTTP_RAW_POST_DATA is not available with
enctype="multipart/form-data".
Nor is php://input or STDIN:
<http://nl2.php.net/manual/en/wrappers.php.php>
--
Rik Wasmus