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Re: Nested PHP [message #184874 is a reply to message #184873]

Wed, 12 February 2014 13:11

The Natural Philosoph
Messages: 993
Registered: September 2010

Karma:

Senior Member

On 12/02/14 12:52, Adrian Tuddenham wrote:
>> BTW - to delete files, you use unlink(). See the documentation at
>>> www.php.net - it's the best reference around.
> I found that function and tried it, but the file didn't seem to go away
> - its name was still visible even after I updated the file listings in
> my ftp program. Eventually I deleted it manually by ftp.
>
> Perhaps I got something wrong or I didn't wait long enough before
> checking; I'll try again.

I found many issues when handling external files with PHP.

I conjectured that PHP caches files and filenames internally, only
flushing to disk on exit.

For example writing a file to disk didn't happen so that mysql could use
it in a load file command unless it was copy()ed first.

unlink() for a file generated within PHP did work. But the same is not
true of files outside of it that may not have write permission for
whatever process spawned PHP..

My response to these issues has been to insert binary data using a
hexadecimal number string, instead of load file, and to use the mysql
database as a repository for all data, rather than the native OS file
system.

Mysql at least has a single unique interface and will queue asynchronous
requests, so that it always does what it says on the tin.

AS far as access to PDFS go, the approach I would take is to put them in
a database too in a BLOB, and use a php script to serve them that
authenticates the user (as identified by a cookie) as valid, or returns
an unauthorised access code.

writing PHP for authorised users is not a noobs easiest task, but its is
one that needs to be mastered if you are going to make the distinction
between authorised and public access.,

--
Ineptocracy

(in-ep-toc’-ra-cy) – a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

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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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