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Re: Send .csv file to browser [message #170034 is a reply to message #170003]

Wed, 06 October 2010 14:42

alvaro.NOSPAMTHANX
Messages: 277
Registered: September 2010

Karma:

Senior Member

El 05/10/2010 16:19, Derek Turner escribió/wrote:
> I want to use MySQL to get a list of email addresses and names and then
> output a .csv file to the browser so that it can be saved and then
> imported into Thunderbird etc.
>
> Having googled around I think the solution will be:
>
> 1. Create and open a local file for writing
>
> 2. Write the data to the local file and close it
>
> 3. Use appropriate header files and then readfile()
>
> 4. Delete the local file
>
> Questions:
>
> 1. Is this a reasonable approach? Or should I be outputting to the
> browser on the fly? Or using PEAR or something like that?

The main benefits of generating a temp file are:

1. You don't have to hold the complete file in memory
2. You can reuse the output

However, readfile() loads the whole file into memory and you delete the
file after sending it.

> 2. Can the headers appear appear anywhere in the script or must they be
> be the first lines?

Headers always come first in almost everything (HTTP, e-mail, etc.).
With certain settings, PHP is able to cache regular output until you
send the last header but it normally makes coding a bit more complicate
and, in your case, you probably don't want to echo the complete file
before the download even starts.

--
-- http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
-- Mi sitio sobre programación web: http://borrame.com
-- Mi web de humor satinado: http://www.demogracia.com
--

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[Message index]

		Send .csv file to browser By: Derek Turner on Tue, 05 October 2010 14:19
		Re: Send .csv file to browser By: Derek Turner on Tue, 05 October 2010 14:20
		Re: Send .csv file to browser By: sheldonlg on Tue, 05 October 2010 14:55
		Re: Send .csv file to browser By: Derek Turner on Tue, 05 October 2010 15:06
		Re: Send .csv file to browser By: sheldonlg on Tue, 05 October 2010 15:11
		Re: Send .csv file to browser By: Peter H. Coffin on Wed, 06 October 2010 16:25
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 16:28
		Re: Send .csv file to browser By: Peter H. Coffin on Thu, 07 October 2010 02:55
		Re: Send .csv file to browser By: Captain Paralytic on Tue, 05 October 2010 15:14
		Re: Send .csv file to browser By: sheldonlg on Tue, 05 October 2010 17:54
		Re: Send .csv file to browser By: Jerry Stuckle on Tue, 05 October 2010 16:05
		Re: Send .csv file to browser By: Derek Turner on Tue, 05 October 2010 16:52
		Re: Send .csv file to browser By: sheldonlg on Tue, 05 October 2010 18:06
		Re: Send .csv file to browser By: Adam Harvey on Wed, 06 October 2010 03:50
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 11:19
		Re: Send .csv file to browser By: Adam Harvey on Thu, 07 October 2010 02:42
		Re: Send .csv file to browser By: Jerry Stuckle on Thu, 07 October 2010 03:13
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 00:18
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 00:21
		Re: Send .csv file to browser By: sheldonlg on Tue, 05 October 2010 18:02
		Re: Send .csv file to browser By: Captain Paralytic on Wed, 06 October 2010 09:01
		Re: Send .csv file to browser By: C. (http://symcbean.b on Tue, 05 October 2010 15:14
		Re: Send .csv file to browser By: Michael on Tue, 05 October 2010 15:20
		Re: Send .csv file to browser By: Peter H. Coffin on Tue, 05 October 2010 15:25
		Re: Send .csv file to browser By: PlastiqueMAN on Tue, 05 October 2010 15:44
		Re: Send .csv file to browser By: PlastiqueMAN on Tue, 05 October 2010 15:55
		Re: Send .csv file to browser By: alvaro.NOSPAMTHANX on Wed, 06 October 2010 14:42
		Re: Send .csv file to browser By: The Natural Philosoph on Wed, 06 October 2010 15:26
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 16:36
		Re: Send .csv file to browser By: sheldonlg on Wed, 06 October 2010 17:52
		Re: Send .csv file to browser By: Jerry Stuckle on Wed, 06 October 2010 18:06
		Re: Send .csv file to browser By: Derek Turner on Thu, 07 October 2010 10:25
		Re: Send .csv file to browser By: Derek Turner on Thu, 07 October 2010 12:08
		Re: Send .csv file to browser By: alvaro.NOSPAMTHANX on Thu, 07 October 2010 12:19
		Re: Send .csv file to browser By: sheldonlg on Thu, 07 October 2010 12:41
		Re: Send .csv file to browser By: Jerry Stuckle on Thu, 07 October 2010 12:49
		Send .csv file to browser - Thanks By: Derek Turner on Sat, 09 October 2010 14:30
		Re: Send .csv file to browser - Thanks By: sheldonlg on Sat, 09 October 2010 15:11

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