[PHP] Query regarding temporarily-uploaded files
Hi all. I have a requirement, wherein I need to allow vanilla uploads of files to a HTTPD server. Any client can upload any number of files (one at a time). Also, there is just one directory, where the files get stored "finally" (that is, after being copied from the temporary location, via "move_uploaded_file") Also, I have been able to get the simple file uploading running via PHP, by picking up one of the numerous "Hello World" examples available :) Now, I am facing the following use-case :: 1) User 1 starts uploading a large file, say "big_file.avi". 2) Meanwhile, user 2 also starts uploading a (different) file, but with the same name "big_file.avi". In an ideal scenario, user 2 should be prompted with a message, that a file of the same name is already being uploaded by someone else somewhere. Is there a way to do this? ( Note that, had the user 2 started uploading AFTER user 1 had finished with the upload, we could probably modify the PHP-script at the sever-side, to let user-2 know that a file of the same name already exits. But I am failing to find a solution, when the user 2 starts the upload WHILE the large file of user 1 is in the process of completing uploading). Any way the issue may be solved? I will be grateful for any pointers :) Regards, Ajay -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Query regarding temporarily-uploaded files
Thanks Jim and Matijn for the quick replies. I will try to have a workaround. On Wed, Jul 10, 2013 at 11:09 PM, Matijn Woudt wrote: > > > > On Wed, Jul 10, 2013 at 7:21 PM, Ajay Garg wrote: > >> Hi all. >> >> I have a requirement, wherein I need to allow vanilla uploads of files >> to a HTTPD server. >> >> Any client can upload any number of files (one at a time). >> Also, there is just one directory, where the files get stored >> "finally" (that is, after being copied from the temporary location, >> via "move_uploaded_file") >> >> Also, I have been able to get the simple file uploading running via >> PHP, by picking up one of the numerous "Hello World" examples >> available :) >> >> >> >> Now, I am facing the following use-case :: >> >> 1) >> User 1 starts uploading a large file, say "big_file.avi". >> >> 2) >> Meanwhile, user 2 also starts uploading a (different) file, but with >> the same name "big_file.avi". >> >> >> In an ideal scenario, user 2 should be prompted with a message, that a >> file of the same name is already being uploaded by someone else >> somewhere. >> Is there a way to do this? >> >> ( Note that, had the user 2 started uploading AFTER user 1 had >> finished with the upload, we could probably modify the PHP-script at >> the sever-side, to let user-2 know that a file of the same name >> already exits. But I am failing to find a solution, when the user 2 >> starts the upload WHILE the large file of user 1 is in the process of >> completing uploading). >> >> >> Any way the issue may be solved? >> >> I will be grateful for any pointers :) >> >> >> >> Regards, >> Ajay >> >> > > Hi, > > This is not possible with PHP, PHP will not know about the file until the > upload is completed. You can use HTML5 or flash(not recommended) for an > alternative way of uploading, and then you can check the file name in > advance. > > - Matijn > -- Regards, Ajay
Re: [PHP] Query regarding temporarily-uploaded files
Thanks Jim and Anthony. Jim, You are right, your solution is doable. But one thing I am a little skeptical about, is what would be the percentage of the people willing to suggest a new name "immediately", versus the percentage of people who would like to cancel the current upload, and come back "later" after walking and coming up with a new name. Anyhow, let me sleep over it :) Anthony, your solution is really a special case of Jim's solution :) Thanks guys for the quick replies; I am obliged, really. On Thu, Jul 11, 2013 at 12:59 AM, Anthony Wlodarski wrote: > Is there anything that would prevent you from somehow uniquely knowing who > the user is uploading the file. For example you mentioned "client'. If > you know > who the client is you can append that to the filename or prepend it, for > the > destination string (second parameter to the function call). That way it > is unique > to that client. > > -Anthony > > > On Wed, Jul 10, 2013 at 2:15 PM, Ajay Garg wrote: > >> Thanks Jim and Matijn for the quick replies. >> I will try to have a workaround. >> >> >> >> On Wed, Jul 10, 2013 at 11:09 PM, Matijn Woudt wrote: >> >> > >> > >> > >> > On Wed, Jul 10, 2013 at 7:21 PM, Ajay Garg >> wrote: >> > >> >> Hi all. >> >> >> >> I have a requirement, wherein I need to allow vanilla uploads of files >> >> to a HTTPD server. >> >> >> >> Any client can upload any number of files (one at a time). >> >> Also, there is just one directory, where the files get stored >> >> "finally" (that is, after being copied from the temporary location, >> >> via "move_uploaded_file") >> >> >> >> Also, I have been able to get the simple file uploading running via >> >> PHP, by picking up one of the numerous "Hello World" examples >> >> available :) >> >> >> >> >> >> >> >> Now, I am facing the following use-case :: >> >> >> >> 1) >> >> User 1 starts uploading a large file, say "big_file.avi". >> >> >> >> 2) >> >> Meanwhile, user 2 also starts uploading a (different) file, but with >> >> the same name "big_file.avi". >> >> >> >> >> >> In an ideal scenario, user 2 should be prompted with a message, that a >> >> file of the same name is already being uploaded by someone else >> >> somewhere. >> >> Is there a way to do this? >> >> >> >> ( Note that, had the user 2 started uploading AFTER user 1 had >> >> finished with the upload, we could probably modify the PHP-script at >> >> the sever-side, to let user-2 know that a file of the same name >> >> already exits. But I am failing to find a solution, when the user 2 >> >> starts the upload WHILE the large file of user 1 is in the process of >> >> completing uploading). >> >> >> >> >> >> Any way the issue may be solved? >> >> >> >> I will be grateful for any pointers :) >> >> >> >> >> >> >> >> Regards, >> >> Ajay >> >> >> >> >> > >> > Hi, >> > >> > This is not possible with PHP, PHP will not know about the file until >> the >> > upload is completed. You can use HTML5 or flash(not recommended) for an >> > alternative way of uploading, and then you can check the file name in >> > advance. >> > >> > - Matijn >> > >> >> >> >> -- >> Regards, >> Ajay >> > > > > -- > Anthony W. > ant92...@gmail.com > -- Regards, Ajay
[PHP] How to send "post"-variables in a "Location" header
Hi all.
I have a scenario, wherein I need to do something like this ::
###
$original_url = "/autologin.php";
$username = "ajay";
$password = "garg";
header('Location: ' . $original_url);
###
As can be seen, I wish to redirect to the URL "autologin.php".
Additionally, I wish to pass two POST key-value pairs :: "user=ajay" and
"password=garg" (I understand that passing GET key-value pairs is trivial).
Is it even possible?
If yes, I will be grateful if someone could let me know how to redirect to
a URL, passing the POST key-value pairs as necessary.
Looking forward to a reply :)
--
Regards,
Ajay
[PHP] Re: How to "download" a multi-part file at the "server" side?
I just came across http://www.w3schools.com/php/php_file_upload.asp, and
tested it..
It works fine, when the file is uploaded via a form.
It does seem that the client-method might indeed play a role.
Here is my Java code for uploading the file ::
###
HttpClient httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION,
HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost(URL);
File file = new File("/path/to/png/file.png");
// Send the image-file data as a Multipart-data.
MultipartEntity mpEntity = new MultipartEntity();
ContentBody cbFile = new FileBody(file, "image/png");
mpEntity.addPart("userfile", cbFile);
httppost.setEntity(mpEntity);
HttpResponse response = httpclient.execute(httppost);
###
Any ideas if making a change at the client (Java) OR/AND server (PHP) might
do the trick?
On Sat, Nov 2, 2013 at 6:06 PM, Ajay Garg wrote:
> Hi all.
>
> I intend to implement a use-case, wherein the client uploads a file in
> multi-part format, and the server then stores the file in a mysql database
> (after "downloading it at the server side).
>
> I have been unable to find any immediate answers through googling; I will
> be grateful if someone could start me in a direction to achieve the
> "downloading at server via php" requirement.
>
> (Don't think it should matter, but I use Java to upload a file in
> multi-part format).
>
> I will be grateful for some pointers.
>
> Thanks in advance
>
>
> Thanks and Regards,
> Ajay
>
--
Regards,
Ajay
Re: [PHP] How to "download" a multi-part file at the "server" side?
Hi Aziz.
Thanks for the reply.
Unfortunately, making the change suggested by you does not make any
difference :(
Sorry, Thanks and Regards
On Sat, Nov 2, 2013 at 10:51 PM, Aziz Saleh wrote:
>
>
>
> On Sat, Nov 2, 2013 at 1:03 PM, Ajay Garg wrote:
>
>> Hi all.
>>
>> 1.
>> I could have the proper "$_FILES["userfile"]["name"]" been echoed back, by
>> replacing
>>ContentBody cbFile = new
>> FileBody(file, "image/png");
>>
>> with
>>ContentBody cbFile = new
>> FileBody(file);
>>
>>
>>
>> 2.
>> However, now I am stuck with the following server-side code.
>> No matter what I do, I always get a "no" echoed back (specifying that the
>> file is not copied to its target place).
>>
>>
>>
>>
>> ###
>> >
>> $headers = apache_request_headers();
>>
>> foreach ($headers as $header => $value)
>> {
>> if($header == "active_window_title")
>> {
>> $active_window_title = $value;
>> break;
>> }
>> }
>>
>>
>> $target_path = "/home/ajay/success.png";
>>
>> move_uploaded_file($_FILES["userfile"]["tmp_name"], $target_path);
>> if(file_exists($target_path))
>> {
>> echo "yes";
>> }
>> else
>> {
>> echo "no";
>> }
>>
>> echo "\n" . $_FILES["userfile"]["name"]; # I always get the proper
>> file-name echoed.
>>
>> ?>
>>
>>
>>
>>
>>
>>
>>
>> Any ideas what stupidity am I making in the PHP code?
>>
>>
>> On Sat, Nov 2, 2013 at 7:13 PM, Ajay Garg wrote:
>>
>> > Does not work :(
>> >
>> >
>> > As per the code-snippet I pasted,
>> > $_FILES["userfile"]["name"]
>> >
>> > should be
>> >
>> /path/to/png/file.png
>> >
>> >
>> > However, $_FILES["userfile"]["name"] is empty.
>> >
>> >
>> > On Sat, Nov 2, 2013 at 6:59 PM, Shawn McKenzie > >wrote:
>> >
>> >> Fairly easy:
>> >> http://www.php.net/manual/en/features.file-upload.post-method.php
>> >>
>> >>
>> >> On Sat, Nov 2, 2013 at 7:36 AM, Ajay Garg
>> wrote:
>> >>
>> >>> Hi all.
>> >>>
>> >>> I intend to implement a use-case, wherein the client uploads a file in
>> >>> multi-part format, and the server then stores the file in a mysql
>> >>> database
>> >>> (after "downloading it at the server side).
>> >>>
>> >>> I have been unable to find any immediate answers through googling; I
>> will
>> >>> be grateful if someone could start me in a direction to achieve the
>> >>> "downloading at server via php" requirement.
>> >>>
>> >>> (Don't think it should matter, but I use Java to upload a file in
>> >>> multi-part format).
>> >>>
>> >>> I will be grateful for some pointers.
>> >>>
>> >>> Thanks in advance
>> >>>
>> >>>
>> >>> Thanks and Regards,
>> >>> Ajay
>> >>>
>> >>
>> >>
>> >
>> >
>> > --
>> > Regards,
>> > Ajay
>> >
>>
>>
>>
>> --
>> Regards,
>> Ajay
>>
>
> Ajay, try changing your mpEntity to:
>
> new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE)
>
> See if it makes a difference.
>
Ajay
