Ritesh Nadhani schreef:
On Feb 13, 2008 6:03 PM, Richard Lynch <ceo@xxxxxxxxx> wrote:
On Wed, February 13, 2008 4:28 am, Ritesh Nadhani wrote:
I have a situation where I have to copy something like 1000 files one
by one to a temporary folder. Tar it using the system tar command and
let the user download the tar file.
Now while the copy is going on at server, I want to show some progress
to the user at client side. Most of the tutorial I found on net was
about showing progress while a file is being uploaded from client to
server. In this case the client has the info but for my case, the
client has no info.
A similar was problem was solved at
http://menno.b10m.net/blog/blosxom/perl/cgi-upload-hook.html but its
in PERL and uses some form of hook. I have no clue how to do it in
PHP.
Any clues or right direction would be awesome.
First of all, don't do that. :-)
Instead, set up a "job" system of what should be copied/tarred, and
then notify the user via email.
Don't make the user sit there waiting for the computer!
If you absolutely HAVE to do this due to a pointy-haired boss...
<?php
$path = "/full/path/to/1000s/of/files";
$dir = opendir($path) or die("Change that path");
$tmp = tmpname(); //or whatever...
while (($file = readdir($dir)) !== false){
echo "$file<br />\n";
copy("$path/$file", "/tmp/$tmp/$path");
}
exec("tar -cf /tmp/$tmp.tar /tmp/$tmp/", $output, $error);
echo implode("<br />\n", $output);
if ($error){
//handle error here!
die("OS Error: $error");
}
?>
shameless plug:
//handle error here could perhaps use this:
http://l-i-e.com/perror.
--
Some people have a "gift" link here.
Know what I want?
I want you to buy a CD from some indie artist.
http://cdbaby.com/from/lynch
Yeah, I get a buck. So?
I was actually doing what you just gave the code for. As of now, I was
doing something like:
""""
for file in files:
copy from source to folder
echo "Copying files encapsulated in ob_flush()"
tar the file which hardly takes time on the filessyetm but does take some time
Provide the link to the tar
"""
So at the client side it was like:
Copying file #1
Copying file #2
....
Download link
I though I could apply some funkiness to it by using some AJAX based
progress bar for which the example showed some sort of hooking and all
which I thought was too much for such a job. I will talk to my boss
regarding this and do the necessary.
BTW, whats the issue with AJAX based approach? Any particular reason
other then it seems to be a hack rather then an elegant solution
(which is more then enough reason not to implement it...but I wonder
if there is a technical reason to it too)?
the problem with the AJAX approach is the fact that there is absolutely
no reason for a user to sit staring at the screen. hit 'Go' get an
email when it's done, do something else in the mean time.
of course a PHB might demand functionality that gives him/her an excuse to
watch a progress bar ... in which case why not waste man hours making it a
funky web2.0 deal ... heck go the whole hog and use 'comet technique' to
push update info to the browser.
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