Re: [PHP] Could this be a bug?
On 09/14/2010 11:31 PM, Camilo Sperberg wrote: On Tue, Sep 14, 2010 at 02:46, Thijs Lensselink wrote: On 09/14/2010 08:33 AM, Thijs Lensselink wrote: On 09/14/2010 12:16 AM, Camilo Sperberg wrote: I have some really strange behaviour going on here, and I think it could be a (minor) PHP's bug. I am not really sure about what happens internally, but my best guess would be that after a memory exhaustion, when I try to execute a custom error handler with the register_shutdown_function (which is executed even after a fatal error) and try to access the element that provoked the memory exhaustion, no error should raise instead of *Uninitialized string offset: 0. I have prepared a little test case to reproduce the error and (I hope) can explain the error. This seems to be your error. You set $errctx to be a string. But later on you use it as an array. Remove the = '' part. And it will function as expected. You're right... However I don't like leaving non-default value in functions so I did something like if(empty($errctx)) $errctx = array() in the first line of the custom error handler which threw out the error message and everything works ok now. I think from 5.2 and up you can use the array keyword to force an array as parameter.. But -and correct me if I'm wrong- isn't isset (or empty) supposed to return a FALSE whenever that variable doesn't exist? With your help, I could reduce the test case into: $asdf = 'hello world'; if (empty($asdf[4]['inventing'])) echo 'nice little world'; if (isset($asdf['inventing'][6])) echo 'little nice world'; // This works ok. This works because the string $asdf is set with a value. So $asdf[4] exists but ['inventing'] doesn't so it will return false $asdf = ''; if (empty($asdf[4]['inventing'])) echo 'nice little world'; if (isset($asdf['inventing'][6])) echo 'little nice world'; // This returns E_NOTICE This doesn't work because the string $asdf is empty. So calling $asdf[4] will trigger a notice since there is no 4th character Shouldn't these 2 examples work exactly the same way? (AKA as Nº 1). If not... why not? Both are string types, onyl difference is that one has no characters in it while the other does, but essentialy they are both the same. Greetings ! -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] php cli question
On Tue, Sep 14, 2010 at 1:15 PM, Per Jessen wrote: > J Ravi Menon wrote: > >> On Tue, Sep 14, 2010 at 12:43 AM, Per Jessen wrote: >>> J Ravi Menon wrote: >>> Few questions: 1) Does opcode cache really matter in such cli-based daemons? As 'SomeClass' is instantiated at every loop, I am assuming it is only compiled once as it has already been 'seen'. >>> >>> Yup. >> >> Just to clarify, you mean we don't need the op-code cache here right? > > That is correct. > 2) What about garbage collection? In a standard apache-mod-php setup, we rely on the end of a request-cycle to free up resources - close file descriptiors, free up memory etc.. I am assuming in the aforesaid standalone daemon case, we would have to do this manually? >>> >>> Yes. >> >> So 'unset($some_big_array)' or 'unset($some_big_object)' etc.. is the >> right way to go for non-resource based items? i.e. it needs to be >> explicitly done? > > It's not quite like C - if you reassign something, the previous contents > are automagically freed. I use unset() if I know it could be a while > (hours) before it'll likely be reassigned, but it won't be used in the > meantime. > Thanks Per for clarifying this for me. Now on my follow up question: [Note: I think it is related to the issues discussed above hence keeping it on this thread but if I am violating any guidelines here, do let me know] One reason the aforesaid questions got triggered was that in our company right now, there is a big discussion on moving away from apache+mod_php solution to nginx+fast-cgi based model for handling all php-based services. The move seems to be more based some anecdotal observations and possibly not based on a typical php-based app (i.e. the php script involved was trivial one acting as some proxy to another backend service). I have written fast-cgi servers in the past in C++, and I am aware how the apahce<>fast-cgi-servers work (in unix socket setups). All our php apps are written with apache+mod_php in mind (no explicit resource mgmt ), so this was a concern to me. If the same scripts now need to run 'forever' as a fastcgi server, are we forced to do such manual resource mgmt? Or are there solutions here that work just as in mod_php? This reminded me of the cli daemons that I had written earlier where such manual cleanups were done, and hence my doubts on this nginx+fast-cgi approach. thx, Ravi > > > -- > Per Jessen, Zürich (14.6°C) > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] 1984 (Big Brother)
Daniel Brown wrote:
On Mon, Sep 13, 2010 at 19:47, Micky Hulse wrote:
Motion sensing camera connected to a mechanical pointer stick aimed to
trigger the server power button.
On his way out of the office:
Clap on/clap off Clapper connected to computer power cable.
It would be cheaper to employ the same method used on some
lawnmowers and required on Jet Skis and Skidoos: a cable with a clip
worn by the rider. The rider falls off, the cable releases from the
vehicle, disengaging the throttle and cutting the engine. The boss
stands up, his entire infrastructure collapses, everyone's connections
are closed, and all PCs subsequently catch fire.
I fear this is the implementation needed to make "boss" see sense, however..
Realistically, a simple desktop-based application running in the
system tray (presuming Windows) would send a kill signal to a
predefined script to issue safe closing routines to the database
first, then any other systems he wants to close out. It could even
have simple options to poll if there's a screensaver activated, which
would initiate the process automatically, should he choose to be
extremely paranoid. The same could be automated to work in reverse,
to automatically bring the systems up, when the local desktop session
becomes active (from hibernation, logoff, or screensaver), or even
with an override ("Pause Sessions") by right-clicking the systray
icon.
The main problem here is in using a stateless protocol (HTTP) in a
stateful manner (with sessions), it makes this, technically, impossible.
That said, you could do this in a stateless manner quite easily by
giving the boss full control of granting and denying access, that way he
is always accountable (with his described nature, it might be good for
the buck to stop with him, rather than your code). I'd suggest having a
simple boolean flag, usersCanAccess and giving him a button to toggle
the flags state from true to false. Real life implementation could be an
empty file which is `touch`ed and `unlink`ed, php implementation being
an if(file_exists('boss_man_say_okay') ){ // let monkeys work } type
solution.
Best,
Nathan
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Re: [PHP] php cli question
Per Jessen wrote: J Ravi Menon wrote: 2) What about garbage collection? In a standard apache-mod-php setup, we rely on the end of a request-cycle to free up resources - close file descriptiors, free up memory etc.. I am assuming in the aforesaid standalone daemon case, we would have to do this manually? Yes. So 'unset($some_big_array)' or 'unset($some_big_object)' etc.. is the right way to go for non-resource based items? i.e. it needs to be explicitly done? It's not quite like C - if you reassign something, the previous contents are automagically freed. I use unset() if I know it could be a while (hours) before it'll likely be reassigned, but it won't be used in the meantime. Has anybody done a comparison of setting to null rather than unset'ing; does unset invoke the garbage collector instantly? i.e. is unset the best approach to clearing objects from memory quickly? Best, Nathan -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Question about news.php.net
Good to know there's a workaround. I am thinking of using one (or more) of the old VOOM boxes to mirror the news server for NNTP-only access. Sent from my DROID. Apologies if formatting is off or I'm top-posting on a list. On Sep 14, 2010 8:59 PM, "Nathan Rixham" wrote: > Daniel Brown wrote: >> On Mon, Sep 13, 2010 at 18:09, MikeB wrote: >>> However, getting access seems to be hit-and-miss, since I more often than >>> not get a message that the connection to news.php.net timed out. >>> >>> Is this an indication that the server is just very busy? I don't get this on >>> any other news server I'm using on the smae news reader and I have gotten >>> this on two different news readers that I have tried. >> >> I don't believe that we've been having any issues with the server, >> no. Are you using NNTP to connect? You may want to consider using >> the HTTP-based RSS and/or RDF feeds if it continues to be an issue. >> In addition, if you continue to have problems, file a bug report at >> http://bugs.php.net/ and we'll look into it further. > > Dan, Mike, > > I can confirm this happens "all the time" in thunderbird, and always has > for many years now, on all PHP NNTP lists. > > However, the problem can be worked around simply, for some reason the > timeout generally only happens with the first call to view a mailing > list, after X minutes of inactivity. Thus, I simply subscribe to a few > different PHP lists (like .soap .test and general) then when I open > thunderbird I quickly click a list I *don't* want to see, then click on > .general, .general then loads nicely as expected letting the other one > timeout :) > > It's hardly a fix, but it works - may be worth checking if this is the > case with the latest thunderbird revision and then reporting it as a > "bug" (in either thunderbird or the mailing list software that PHP is > running). > > Best, > > Nathan
[PHP] Re: Adjusting Session Times
Floyd Resler wrote: We just got a client whose requirement is that user sessions expire after 30 minutes of inactivity. Our other clients are happy with not having their sessions expire during the work day (i.e. life is 8 hours). I am using a MySQL database to store the session data. My thought is to adjust the session expiration in the table based on the client currently logged in. Is this a good approach or would there be better ways to do it? And just to clarify: all clients use the same Web site. It may be worth storing sessions in something like redis [1] instead, which let's you expire data [2] after a given time, then you can configure however you want easily. The other benefit is that sessions will be extremely fast given that they'll all be stored in ram :) [1] http://code.google.com/p/redis/ [2] http://code.google.com/p/redis/wiki/ExpireCommand Best, Nathan -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Question about news.php.net
Daniel Brown wrote: On Mon, Sep 13, 2010 at 18:09, MikeB wrote: However, getting access seems to be hit-and-miss, since I more often than not get a message that the connection to news.php.net timed out. Is this an indication that the server is just very busy? I don't get this on any other news server I'm using on the smae news reader and I have gotten this on two different news readers that I have tried. I don't believe that we've been having any issues with the server, no. Are you using NNTP to connect? You may want to consider using the HTTP-based RSS and/or RDF feeds if it continues to be an issue. In addition, if you continue to have problems, file a bug report at http://bugs.php.net/ and we'll look into it further. Dan, Mike, I can confirm this happens "all the time" in thunderbird, and always has for many years now, on all PHP NNTP lists. However, the problem can be worked around simply, for some reason the timeout generally only happens with the first call to view a mailing list, after X minutes of inactivity. Thus, I simply subscribe to a few different PHP lists (like .soap .test and general) then when I open thunderbird I quickly click a list I *don't* want to see, then click on .general, .general then loads nicely as expected letting the other one timeout :) It's hardly a fix, but it works - may be worth checking if this is the case with the latest thunderbird revision and then reporting it as a "bug" (in either thunderbird or the mailing list software that PHP is running). Best, Nathan -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Could this be a bug?
On Tue, Sep 14, 2010 at 02:46, Thijs Lensselink wrote:
> On 09/14/2010 08:33 AM, Thijs Lensselink wrote:
>
>> On 09/14/2010 12:16 AM, Camilo Sperberg wrote:
>>
>>> I have some really strange behaviour going on here, and I think it could
>>> be
>>> a (minor) PHP's bug.
>>> I am not really sure about what happens internally, but my best guess
>>> would
>>> be that after a memory exhaustion, when I try to execute a custom error
>>> handler with the register_shutdown_function (which is executed even after
>>> a
>>> fatal error) and try to access the element that provoked the memory
>>> exhaustion, no error should raise instead of *Uninitialized string
>>> offset:
>>> 0.
>>>
>>> I have prepared a little test case to reproduce the error and (I hope)
>>> can
>>> explain the error.
>>>
>>> >> date_default_timezone_set('America/Santiago');
>>> ini_set('memory_limit','1M');
>>> ini_set('display_errors',1);
>>> error_reporting(-1);
>>>
>>> function my_error_handler($errno = '0', $errstr = '[FATAL] General
>>> Error',
>>> $errfile = 'N/A', $errline = 'N/A', $errctx = '') {
>>>
>>
> This seems to be your error. You set $errctx to be a string. But later on
> you use it as an array.
> Remove the = '' part. And it will function as expected.
You're right... However I don't like leaving non-default value in functions
so I did something like if(empty($errctx)) $errctx = array() in the first
line of the custom error handler which threw out the error message and
everything works ok now.
But -and correct me if I'm wrong- isn't isset (or empty) supposed to return
a FALSE whenever that variable doesn't exist?
With your help, I could reduce the test case into:
$asdf = 'hello world';
if (empty($asdf[4]['inventing'])) echo 'nice little world';
if (isset($asdf['inventing'][6])) echo 'little nice world';
// This works ok.
$asdf = '';
if (empty($asdf[4]['inventing'])) echo 'nice little world';
if (isset($asdf['inventing'][6])) echo 'little nice world';
// This returns E_NOTICE
Shouldn't these 2 examples work exactly the same way? (AKA as Nº 1). If
not... why not? Both are string types, onyl difference is that one has no
characters in it while the other does, but essentialy they are both the
same.
Greetings !
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[PHP] Image question for runways
Hi,
I am trying to create an on the fly image of runway layouts but am
hitting a brick wall.
I have both the starting and ending coordinates of each runway, it's
length, as well as it's angle of direction (heading).
I can draw one runway without any problem, but where I am falling short
is how to 'scale', if that is the right word, the other runway(s) to
display properly in a 500x500px image
function imagepolarline($image,$x1,$y1,$length,$angle,$color)
{
$length=($length/500)*20;
$x2 = $x1 + cos( deg2rad($angle-90)) * $length;
$y2 = $y1 + sin( deg2rad($angle-90)) * $length;
imageline($image, $x1,$y1,$x2,$y2, $color);
}
//'base' coords
$x1=200;$y1=200;
$scale=1;
//if first runway
if ($d==0) {$xbase=abs($lon1);$ybase=abs($lat1);}
//for all others
else
{
$x1=$x1+(($xbase-(abs($lon1)))*$scale);
$y1=$y1+(($ybase-(abs($lat1)))*$scale);
}
Here is some test data if that would help:
"length","lat_start","lon_start","heading","lat_stop","lon_stop"
"6869","38.8424","-77.0368","355.5000","38.8612","-77.0387"
"4911","38.8423","-77.0408","26.","38.8544","-77.0333"
"5204","38.8617","-77.0438","142.7000","38.8503","-77.0327"
Any suggestions would be most appreciated.
Alexis
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Re: [PHP] php cli question
J Ravi Menon wrote: > On Tue, Sep 14, 2010 at 12:43 AM, Per Jessen wrote: >> J Ravi Menon wrote: >> >>> Few questions: >>> >>> 1) Does opcode cache really matter in such cli-based daemons? As >>> 'SomeClass' is instantiated at every loop, I am assuming it is only >>> compiled once as it has already been 'seen'. >> >> Yup. > > Just to clarify, you mean we don't need the op-code cache here right? That is correct. >>> 2) What about garbage collection? In a standard apache-mod-php >>> setup, we rely on the end of a request-cycle to free up resources - >>> close file descriptiors, free up memory etc.. >>> I am assuming in the aforesaid standalone daemon case, we would >>> have to do this manually? >> >> Yes. > > So 'unset($some_big_array)' or 'unset($some_big_object)' etc.. is the > right way to go for non-resource based items? i.e. it needs to be > explicitly done? It's not quite like C - if you reassign something, the previous contents are automagically freed. I use unset() if I know it could be a while (hours) before it'll likely be reassigned, but it won't be used in the meantime. -- Per Jessen, Zürich (14.6°C) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] bcompiler: compile in a diferent directory
I use bcompiler in my php code(bcompiler_write_header+bcompiler_write_file+bcompiler_write_footer). If the original phps are not located in the deployment directory I get an error: require_once use the path to the not compiled phps. I'd like to know if there is any way to compile the phps and use the compiled versión from a different directory. Thanks Ramiro
Re: [PHP] php cli question
On Tue, Sep 14, 2010 at 12:43 AM, Per Jessen wrote: > J Ravi Menon wrote: > >> Few questions: >> >> 1) Does opcode cache really matter in such cli-based daemons? As >> 'SomeClass' is instantiated at every loop, I am assuming it is only >> compiled once as it has already been 'seen'. > > Yup. Just to clarify, you mean we don't need the op-code cache here right? > >> 2) What about garbage collection? In a standard apache-mod-php setup, >> we rely on the end of a request-cycle to free up resources - close >> file descriptiors, free up memory etc.. >> I am assuming in the aforesaid standalone daemon case, we would >> have to do this manually? > > Yes. > So 'unset($some_big_array)' or 'unset($some_big_object)' etc.. is the right way to go for non-resource based items? i.e. it needs to be explicitly done? thx, Ravi >> Note: I have written pre-forker deamons in php directly and >> successfully deployed them in the past, but never looked at in depth >> to understand all the nuances. Anecdotally, I have >> done 'unset()' at some critical places were large arrays were used, >> and I think it helped. AFAIK, unlike Java, there is no 'garbage >> collector' thread that does all the magic? > > Correct. > > > > -- > Per Jessen, Zürich (12.9°C) > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Filestat.c erorrs when building php-5.3.3 on solaris
For the record, the problem appears to have been that the gcc version was too old. It compiles with gcc 3.4.6 -Vicki Stanfield, RHCE, CISSP Web Management Group tso-cs-web-t...@dfas.mil Defense Finance and Accounting Service Technical Services Organization - Corporate Services vicki.stanfield@dfas.mil (317)510-3375 -Original Message- From: Tom Rogers [mailto:trog...@kwikin.com] Sent: Thursday, September 09, 2010 10:05 PM To: STANFIELD, VICKI CTR DFAS Cc: php-general@lists.php.net Subject: Re: [PHP] Filestat.c erorrs when building php-5.3.3 on solaris Hi, Friday, September 10, 2010, 2:49:36 AM, you wrote: SVCD> Ok, I tried removing the --disable-posix and adding --with-tsrm-pthreads SVCD> to the configure options. SVCD> The resulting configure looks like this: SVCD> CC='/usr/local/bin/gcc' \ SVCD> './configure' \ SVCD> '--prefix=/app/php533' \ SVCD> '--enable-shared' \ SVCD> '--with-tsrm-pthreads' \ SVCD> '--with-gnu-ld' \ SVCD> '--with-apxs2=/app/apache2216/bin/apxs' \ SVCD> '--with-zlib' \ SVCD> '--with-zlib-dir=/usr/lib' \ SVCD> '--with-png-dir=/usr/include/libpng' \ SVCD> '--with-openssl=/shared_ro/openssl_098' \ SVCD> '--with-oci8=/shared_ro/users.oracle/11.1.0' SVCD> Now I get this: SVCD> /users/0/php-5.3.3/ext/posix/posix.c: In function SVCD> `zif_posix_getgrnam': SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1017: error: too many arguments SVCD> to function `getgrnam_r' SVCD> /users/0/php-5.3.3/ext/posix/posix.c: In function SVCD> `zif_posix_getgrgid': SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1067: error: too many arguments SVCD> to function `getgrgid_r' SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1067: warning: assignment makes SVCD> integer from pointer without a cast SVCD> /users/0/php-5.3.3/ext/posix/posix.c: In function SVCD> `zif_posix_getpwnam': SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1136: error: too many arguments SVCD> to function `getpwnam_r' SVCD> /users/0/php-5.3.3/ext/posix/posix.c: In function SVCD> `zif_posix_getpwuid': SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1184: error: too many arguments SVCD> to function `getpwuid_r' SVCD> /users/0/php-5.3.3/ext/posix/posix.c:1184: warning: assignment makes SVCD> integer from pointer without a cast SVCD> gmake: *** [ext/posix/posix.lo] Error 1 SVCD> Do I need to add the -D_POSIX_PTHREAD_SEMANTICS in the makefile or SVCD> configure.in somewhere? Can you point me in the right direction? SVCD> -Vicki Stanfield, RHCE, CISSP SVCD> -Original Message- SVCD> From: Tom Rogers [mailto:trog...@kwikin.com] SVCD> Sent: Wednesday, September 08, 2010 10:06 PM SVCD> To: Tom Rogers SVCD> Cc: php-general@lists.php.net SVCD> Subject: Re: [PHP] Filestat.c erorrs when building php-5.3.3 on solaris SVCD> Hi, SVCD> Thursday, September 9, 2010, 11:31:06 AM, you wrote: TR>> Hi, TR>> Thursday, September 9, 2010, 2:07:50 AM, you wrote: SVCD>>> I am trying to build php-5.3.3 and getting the following error: SVCD>>> /users/0/php-5.3.3/TSRM -I/users/0/php-5.3.3/Zend SVCD>>> -I/usr/local/include -g -O2 -DZTS -c SVCD>>> /users/0/php-5.3.3/ext/standard/filestat.c -o SVCD>>> ext/standard/filestat.lo SVCD>>> /users/0/php-5.3.3/ext/standard/filestat.c: In function SVCD>>> `php_do_chgrp': SVCD>>> /users/0/php-5.3.3/ext/standard/filestat.c:416: error: too SVCD> many SVCD>>> arguments to function `getgrnam_r' SVCD>>> /users/0/php-5.3.3/ext/standard/filestat.c: In function SVCD>>> `php_do_chown': SVCD>>> /users/0/php-5.3.3/ext/standard/filestat.c:517: error: too SVCD> many SVCD>>> arguments to function `getpwnam_r' SVCD>>> make: *** [ext/standard/filestat.lo] Error 1 SVCD>>> I have set my ORACLE_HOME, my PATH, and my LD_LIBRARY_PATH SVCD>>> And used the following configure command: SVCD>>> ./configure --prefix=/app/php533 SVCD> --with-apxs2=/app/apache2215/bin/apxs SVCD>>> --with-zlib --with-zlib-dir=/usr/lib SVCD>>> --with-png-dir=/usr/include/libpng SVCD>>> --with-openssl=/shared_ro/openssl_098 SVCD>>> --with-oci8=/shared_ro/users.oracle/11.1.0 SVCD>>> I am using gmake 3.80. Can anyone give me a hint as to what I am SVCD> doing SVCD>>> wrong in this build? SVCD>>> -Vicki Stanfield, RHCE, CISSP TR>> From the error message it would seem the operating SVCD> system's TR>> getpwnam_r() function is not POSIX compatible. TR>> What system are you compiling on? TR>> -- TR>> regards, TR>> Tom SVCD> It would seem you need to add -D_POSIX_PTHREAD_SEMANTICS to the cc SVCD> flags to get the right function. SVCD> -- SVCD> regards, SVCD> Tom That should get added automatically when you run configure if it recognizes that the system is solaris. Try adding --host=solaris to configure and see if that helps -- regards, Tom -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Adjusting Session Times
Tedd,
I really like your solution. The idea of storing the expiration in the
SESSION makes it easier for me and makes it more flexible. Someone else had
provided a solution that would actually allow me to take it down to a user
level if I needed to. I loved the idea for flexibility but would have required
a major rewrite. Your idea gives me the flexibility and doesn't require any
major rewriting - just a little tweaking.
Thanks!
Floyd
On Sep 14, 2010, at 12:58 PM, tedd wrote:
> At 10:26 AM -0400 9/14/10, Floyd Resler wrote:
>> We just got a client whose requirement is that user sessions expire after 30
>> minutes of inactivity. Our other clients are happy with not having their
>> sessions expire during the work day (i.e. life is 8 hours). I am using a
>> MySQL database to store the session data. My thought is to adjust the
>> session expiration in the table based on the client currently logged in. Is
>> this a good approach or would there be better ways to do it? And just to
>> clarify: all clients use the same Web site.
>>
>> Thanks!
>> Floyd
>
> Floyd:
>
> I don't know how others solve this, but my solution is pretty straightforward
> (see code below).
>
> I require this code for every script that is in the secured area. Simply put,
> if the user runs a script, then this script is also run.
>
> As a result, if the user is not logged in they are directed to the login
> script. If the user is logged in, but has exceeded the expiration time due to
> inactivity, then the user is redirected to the same login script with a GET
> value to trigger the login script to report that they timed out due to
> inactivity.
>
> I find it bad practice to tell a user that they are not logged in when they
> did log in. It's better to explain why they have to log on again.
>
> Now, with respect to your storing the expiration time in the database, that
> could be done easily enough by this script accessing the database, getting,
> and setting the time-limit -- OR -- at the start of any logon have the script
> pull the time-limit from the database and store that value in a SESSION.
> Either way would work.
>
> In any event, this is what I do.
>
> Cheers,
>
> tedd
>
> == code
>
>
> $redirect = 'http://yourdomain.com/admin/logon.php';
>
> // standard security
>
> $secure = isset($_SESSION['security']) ? $_SESSION['security'] : 0;
>
> if ($secure == 0) // if admin is not logged in -- then redirect to the admin
> logon
> {
> header("location:$redirect");
> exit();
> }
>
> // timed security
>
> $_SESSION['start'] = isset($_SESSION['start']) ? $_SESSION['start'] : 0;
>
> $timelimit = 15 * 60; // 15 minutes
> $now = time();
>
> if($now > $_SESSION['start'] + $timelimit)
> {
> logOff();
> $t = '?t=1';
> header("location:$redirect$t");
> exit();
> }
>
> $_SESSION['start'] = time();
>
> // properly logged on pass here
>
> ?>
>
>
> // to destroy the current session
>
> function logOff()
> {
> $_SESSION = array();
>
> if(isset($_COOKIE[session_name()]))
> {
> setcookie(session_name(), '', time()-86400, '/');
> }
> session_destroy();
> }
>
> --
> ---
> http://sperling.com/
>
> --
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> To unsubscribe, visit: http://www.php.net/unsub.php
>
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Re: [PHP] Adjusting Session Times
At 10:26 AM -0400 9/14/10, Floyd Resler wrote:
We just got a client whose requirement is that user sessions expire
after 30 minutes of inactivity. Our other clients are happy with
not having their sessions expire during the work day (i.e. life is 8
hours). I am using a MySQL database to store the session data. My
thought is to adjust the session expiration in the table based on
the client currently logged in. Is this a good approach or would
there be better ways to do it? And just to clarify: all clients use
the same Web site.
Thanks!
Floyd
Floyd:
I don't know how others solve this, but my solution is pretty
straightforward (see code below).
I require this code for every script that is in the secured area.
Simply put, if the user runs a script, then this script is also run.
As a result, if the user is not logged in they are directed to the
login script. If the user is logged in, but has exceeded the
expiration time due to inactivity, then the user is redirected to the
same login script with a GET value to trigger the login script to
report that they timed out due to inactivity.
I find it bad practice to tell a user that they are not logged in
when they did log in. It's better to explain why they have to log on
again.
Now, with respect to your storing the expiration time in the
database, that could be done easily enough by this script accessing
the database, getting, and setting the time-limit -- OR -- at the
start of any logon have the script pull the time-limit from the
database and store that value in a SESSION. Either way would work.
In any event, this is what I do.
Cheers,
tedd
== code
http://yourdomain.com/admin/logon.php';
// standard security
$secure = isset($_SESSION['security']) ? $_SESSION['security'] : 0;
if ($secure == 0) // if admin is not logged in -- then redirect to
the admin logon
{
header("location:$redirect");
exit();
}
// timed security
$_SESSION['start'] = isset($_SESSION['start']) ? $_SESSION['start'] : 0;
$timelimit = 15 * 60; // 15 minutes
$now = time();
if($now > $_SESSION['start'] + $timelimit)
{
logOff();
$t = '?t=1';
header("location:$redirect$t");
exit();
}
$_SESSION['start'] = time();
// properly logged on pass here
?>
http://sperling.com/
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Re: [PHP] 1984 (Big Brother)
At 8:05 PM -0400 9/13/10, Daniel Brown wrote: The boss stands up, his entire infrastructure collapses, everyone's connections are closed, and all PCs subsequently catch fire. LOL Sounds good to me. After that happens a couple of times, maybe things will change. If it's the private sector, they investigate and find a better solution. If it's the public sector, they will probably require water based fire extinguishers. Cheers, tedd -- --- http://sperling.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Adjusting Session Times
On Tue, Sep 14, 2010 at 10:26 AM, Floyd Resler wrote: > We just got a client whose requirement is that user sessions expire after 30 > minutes of inactivity. Our other clients are happy with not having their > sessions expire during the work day (i.e. life is 8 hours). I am using a > MySQL database to store the session data. My thought is to adjust the > session expiration in the table based on the client currently logged in. Is > this a good approach or would there be better ways to do it? And just to > clarify: all clients use the same Web site. > > Thanks! > Floyd I store the date and time of the last page access and the session lifetime in minutes in the database. Then when I fetch the session from the database, the WHERE clause includes a condition that the number of minutes elapsed between the current date/time and the time stored in the session table is less than the session lifetime (maximum duration of inactivity for that session). That way, each individual user could have his or her own session timeout period if needed. Andrew -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Adjusting Session Times
> My thought is to adjust the session expiration in the table based on the > client currently logged in. > > I don't know if there's a better way, but I would probably just do that. The expiration would be set to whatever the client's preference is, and default to 8 hours if he doesn't have one. You may want to set some checks to ensure that the client's preference is within a specific range (e.g. between 30 minutes and 16 hours). Chris.
[PHP] Adjusting Session Times
We just got a client whose requirement is that user sessions expire after 30 minutes of inactivity. Our other clients are happy with not having their sessions expire during the work day (i.e. life is 8 hours). I am using a MySQL database to store the session data. My thought is to adjust the session expiration in the table based on the client currently logged in. Is this a good approach or would there be better ways to do it? And just to clarify: all clients use the same Web site. Thanks! Floyd -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: 1984 (Big Brother)
Gary wrote: tedd wrote: I have a client who wants his employees' access to their online business database restricted to only times when he is logged on. (Don't ask why) Simply put a "dead man's handle" under his seat which turns on the power to the server when he sits on it. I figured we'd get here sooner or later, esp. after I saw Daniel B. talking about lawnmowers. And now you can tell the client with a straight face ... "if you want any work to get done today you'd best sit your @$$ down right here" Then, of course, for fun, you could encourage PHB to bounce up & down a few times a day "to keep the employees on their toes." He'd dig it, I'm sure, and you'd pick up a good parcel of extra work recovering DB's ... and disks. Richard Quadling: You get all the employees in a room, with the boss. And then you tell them that when the boss isn't in, they don't have to do any work. I'm pretty sure the employees will be your new BFFs. +11. We should ABSOLUTELY copy Scot Adams on this. Wait a minute, maybe Tedd's client IS Scot Adams. Kevin Kinsey -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Counting Children!
I managed to solve this myself. Here is the code. For some reason
"foreach" works for the first set of non unique tags and doesn't work if
the non unique tags are nested within the first set. Use the following
code to access the tag values of the nested non unique tags. (see the
XML file below if this seems confusing)
$chi = count($member->line);
for ($i = 0; $i < $chi; $i++)
{
echo $member->line[$i]->particular1;
echo $member->line[$i]->amount1;
echo $member->line[$i]->particular2;
echo $member->line[$i]->amount2;
}
Best regards
Sridhar
Sridhar Pandurangiah wrote:
Hi
I have an XML generated by another computer application. The format is
as below. (Don't worry about the data in the XML. Its the test
data).
I am able to locate the correct member bill using XPATH.
However I have hit a bottleneck. I am unable to echo all the
elements. This is what happens
$row = simplexml_load_string($member->asXML());
echo $line->particular1;
echo $line->amount1;
echo $line->particular2;
echo $line->amount2;
Echoes the first element of the member bill. If I add the same
set of statements it echoes the second element and so on. But
then if I put the following code which I feel is correct
$row = simplexml_load_string($member->asXML());
foreach ($row->line as $line);
{
echo $line->particular1;
echo $line->amount1;
echo $line->particular2;
echo $line->amount2;
}
Echoes only the last element of the member. Can someone tell me
what's wrong
-The XML file
-
The Great Eastern Club
Anna Road
Madras
BILL
A0099
Bill no. : A0099/APRIL 10
Raman C V
Run date : 03/05/2010
NO 33,MUGAPPAIR ROAD,
PADI,
CHENNAI
600032
9840012345
STATEMENT OF ACCOUNTS AND BILL FOR THE MONTH OF
APRIL-2010
Particulars
Debit
Receivables
Credit
Opening Balance
275.14
-
0.00
CHARGES
33.09
MINIMUM USAGE
220.60
SUBSCRIPTION CHARGES
220.60
WATER CHARGE
22.06
Total Debit
771.49
Total Credit
0.00
Amount to be Received
771.49
Hereafter no reminders will be sent for payment of
monthly/Arrears bills.
A0100
Bill no. : A0100/APRIL 10
Sandeep
Run date : 03/05/2010
NO 12,
TNAGAR,
CHENNAI
600017
9840012365
STATEMENT OF ACCOUNTS AND BILL FOR THE MONTH OF
APRIL-2010
Particulars
Debit
Receivables
Credit
Opening Balance
496.38
-
0.00
ENTERTAINMENT CHARGES
33.09
17/06/2010 CASH PCR/000544/10-11
124.00
MINIMUM USAGE
124.00
SUBSCRIPTION CHARGES
220.60
WATER CHARGE
22.06
Total Debit
896.13
Total Credit
124.00
Amount to be Received
772.13
Hereafter no reminders will be sent for payment of
monthly/Arrears bills.
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Re: [PHP] Re: 1984 (Big Brother)
On 14 September 2010 08:05, Gary wrote: > tedd wrote: >> I have a client who wants his employees' access to their online business >> database restricted to only times when he is logged on. (Don't ask why) > > Simply put a "dead man's handle" under his seat which turns on the power > to the server when he sits on it. > > -- > Gary Please do NOT send me 'courtesy' replies off-list. > PHP 5.2.12 (cli) (built: Jan 14 2010 14:54:11) > 1.7.7(0.230/5/3) 2010-08-31 09:58 Cygwin > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > Hmm. I think there is a really easy, cost free, way to deal with this. You get all the employees in a room, with the boss. And then you tell them that when the boss isn't in, they don't have to do any work. I'm pretty sure the employees will be your new BFFs. -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] php cli question
J Ravi Menon wrote: > Few questions: > > 1) Does opcode cache really matter in such cli-based daemons? As > 'SomeClass' is instantiated at every loop, I am assuming it is only > compiled once as it has already been 'seen'. Yup. > 2) What about garbage collection? In a standard apache-mod-php setup, > we rely on the end of a request-cycle to free up resources - close > file descriptiors, free up memory etc.. > I am assuming in the aforesaid standalone daemon case, we would > have to do this manually? Yes. > Note: I have written pre-forker deamons in php directly and > successfully deployed them in the past, but never looked at in depth > to understand all the nuances. Anecdotally, I have > done 'unset()' at some critical places were large arrays were used, > and I think it helped. AFAIK, unlike Java, there is no 'garbage > collector' thread that does all the magic? Correct. -- Per Jessen, Zürich (12.9°C) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
