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Re: Nested PHP [message #184868 is a reply to message #184866]

Wed, 12 February 2014 10:33

Tim Streater
Messages: 328
Registered: September 2010

Karma:

Senior Member

In article <1lgy8o1.4vb3i3fbpwjqN%adrian(at)poppyrecords(dot)invalid(dot)invalid>,
Adrian Tuddenham <adrian(at)poppyrecords(dot)invalid(dot)invalid> wrote:

> Jerry Stuckle <jstucklex(at)attglobal(dot)net> wrote:
>
>> On 2/11/2014 7:41 PM, Peter H. Coffin wrote:
>>> On Tue, 11 Feb 2014 09:27:54 -0500, Jerry Stuckle wrote:
>>>> On 2/11/2014 9:14 AM, Peter H. Coffin wrote:
>>>> > On Mon, 10 Feb 2014 16:51:37 -0500, Jerry Stuckle wrote:
>>>> >> On 2/10/2014 4:44 PM, Adrian Tuddenham wrote:
>>>> >>> I was using a browser to view it, but the source code was coming from
>>>> >>> a
>>>> >>> php program, not directly from a file on the server.
>>>> >>>
>>>> >>>
>>>> >>
>>>> >> Anything output by a PHP program is sent directly to the client. It is
>>>> >> not processed (again) by the web server, so the php code you generate
>>>> >> will never be processed.
>>>> >>
>>>> >> The browser will see exactly what you sent - nothing more, nothing
>>>> >> less.
>>>> >
>>>> > Right.
>>>> >
>>>> > Hmm... Might be worth trying writing to a temporary file, include()ing
>>>> > it, then cleaning up at the end of the script. It's a LITTLE
>>>> > complicated, but...
>>>> >
>>>>
>>>> And subject to all kinds of problems - such as concurrency with others
>>>> requesting the same page, getting rid of old copies, having to redirect
>>>> the browser to the temporary file, the user bookmarking the temporary
>>>> file... and probably several others.
>>>
>>> I think those are surmountable, with proper planning. Generating a
>>> guaranteed unique filename for the temporary file is essentially a
>>> solved problem, for example.
>>>
>>> The big question, though, is why can't this be solved WITHOUT the clunky
>>> mechanism. It almost smells richard-ish...
>>>
>>
>> That takes care of the concurrency problem - but that's all it takes
>> care of. When do you delete the file, for instance? Or what if the
>> user bookmarks the file?
>
> How do you delete the file? I have tried a few 'obvious' (obvious to
> me, that is) methods, but they don't seem to work. I initially tried
> going down the temporary file route, but my inability to find a way of
> deleting the files was one reason why I abandoned it.

unlink ('/path/to/file');

> I felt I needed to read through a selection of easy-to-follow examples
> of how real programmers solve real (straightforward) problems in the
> world of php - but as these don't seem to be available in any sort of
> collected form, I have turned to this group for guidance.

Yes, in 2000 I was given a 20 minutes tutorial about PHP and webpages
by the chap doing the company's assets database; he then (having
resigned a little before) walked out the door and was not seen again.
Luckily for me I had 35 years of programming experience. That was my
intro to PHP, javascript, and how web servers work.

The best resource is the PHP web site; it's one reason I don't use
perl. PHP folks seem to do things in a straightforward way and don't
try to be smart-alecs.

See here for the docs:

<http://www.php.net/manual/en/>

You can find a simple example of how ajax can be used (how I use it in
my email client, f'rinstance) here:

<http://www.clothears.org.uk>

Anyway, keep coming back here with questions.

--
Tim

"That excessive bail ought not to be required, nor excessive fines imposed,
nor cruel and unusual punishments inflicted" -- Bill of Rights 1689

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[Message index]

		Nested PHP By: adrian on Mon, 10 February 2014 20:24
		Re: Nested PHP By: Jerry Stuckle on Mon, 10 February 2014 20:56
		Re: Nested PHP By: adrian on Mon, 10 February 2014 21:44
		Re: Nested PHP By: Jerry Stuckle on Mon, 10 February 2014 21:51
		Re: Nested PHP By: Peter H. Coffin on Tue, 11 February 2014 14:14
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 14:27
		Re: Nested PHP By: Peter H. Coffin on Wed, 12 February 2014 00:41
		Re: Nested PHP By: Jerry Stuckle on Wed, 12 February 2014 01:03
		Re: Nested PHP By: adrian on Wed, 12 February 2014 10:13
		Re: Nested PHP By: Tim Streater on Wed, 12 February 2014 10:33
		Re: Nested PHP By: Jerry Stuckle on Wed, 12 February 2014 11:30
		Re: Nested PHP By: adrian on Wed, 12 February 2014 12:52
		Re: Nested PHP By: The Natural Philosoph on Wed, 12 February 2014 13:11
		Re: Nested PHP By: Denis McMahon on Thu, 13 February 2014 06:55
		Re: Nested PHP By: Peter H. Coffin on Thu, 13 February 2014 18:02
		Re: Nested PHP By: Stefan+Usenet on Wed, 12 February 2014 12:14
		Re: Nested PHP By: The Natural Philosoph on Mon, 10 February 2014 22:09
		Re: Nested PHP By: Christoph Michael Bec on Mon, 10 February 2014 22:23
		Re: Nested PHP By: Tim Streater on Mon, 10 February 2014 22:27
		Re: Nested PHP By: Geoff Muldoon on Mon, 10 February 2014 22:30
		Re: Nested PHP By: Denis McMahon on Mon, 10 February 2014 23:06
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 01:46
		Re: Nested PHP By: adrian on Tue, 11 February 2014 10:11
		Re: Nested PHP By: Tim Streater on Tue, 11 February 2014 11:17
		Re: Nested PHP By: adrian on Tue, 11 February 2014 12:01
		Re: Nested PHP By: Tim Streater on Tue, 11 February 2014 12:45
		Re: Nested PHP By: Christoph Michael Bec on Tue, 11 February 2014 12:55
		Re: Nested PHP By: Denis McMahon on Tue, 11 February 2014 13:29
		Re: Nested PHP By: adrian on Tue, 11 February 2014 14:31
		Re: Nested PHP By: Denis McMahon on Tue, 11 February 2014 17:24
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 13:15
		Re: Nested PHP By: adrian on Tue, 11 February 2014 14:31
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 15:10
		Re: Nested PHP By: adrian on Tue, 11 February 2014 15:31
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 16:24
		Re: Nested PHP By: adrian on Wed, 12 February 2014 10:13
		Re: Nested PHP By: Jerry Stuckle on Wed, 12 February 2014 11:33
		Re: Nested PHP By: Ben Bacarisse on Tue, 11 February 2014 15:26
		Re: Nested PHP By: Ben Bacarisse on Tue, 11 February 2014 14:41
		Re: Nested PHP By: adrian on Tue, 11 February 2014 15:31
		Re: Nested PHP By: Ben Bacarisse on Tue, 11 February 2014 15:53
		Re: Nested PHP By: Jerry Stuckle on Tue, 11 February 2014 16:26
		Re: Nested PHP By: bill on Tue, 11 February 2014 12:12
		Re: Nested PHP By: Mr Oldies on Wed, 12 February 2014 14:33
		Re: Nested PHP By: Denis McMahon on Thu, 13 February 2014 06:47
		Re: Nested PHP By: Scott Johnson on Thu, 13 February 2014 13:01
		Re: Nested PHP By: Evan Platt on Fri, 14 February 2014 15:19
		Re: Nested PHP By: Scott Johnson on Fri, 14 February 2014 18:43
		Re: Nested PHP By: Arno Welzel on Sun, 02 March 2014 14:54
		Re: Nested PHP By: adrian on Sun, 02 March 2014 18:10
		Re: Nested PHP By: The Natural Philosoph on Mon, 03 March 2014 11:38
		Re: Nested PHP By: Arno Welzel on Mon, 17 March 2014 14:26
		Re: Nested PHP By: Jerry Stuckle on Mon, 17 March 2014 14:52
		Re: Nested PHP By: The Natural Philosoph on Mon, 17 March 2014 15:33
		Re: Nested PHP By: Peter H. Coffin on Mon, 17 March 2014 22:10
		Re: Nested PHP By: The Natural Philosoph on Mon, 17 March 2014 23:01
		Re: Nested PHP By: Christoph Michael Bec on Mon, 17 March 2014 23:31
		Re: Nested PHP By: The Natural Philosoph on Tue, 18 March 2014 13:10
		Re: Nested PHP By: Gabriel on Mon, 17 March 2014 15:18

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