php-general Digest 19 Aug 2009 07:52:37 -0000 Issue 6293
php-general Digest 19 Aug 2009 07:52:37 - Issue 6293
Topics (messages 296941 through 296952):
Really quick try/catch question
296941 by: Brian Dunning
296942 by: Nathan Nobbe
PHP and CGI
296943 by: sono-io.fannullone.us
296944 by: Daevid Vincent
296945 by: Shawn McKenzie
296946 by: Shawn McKenzie
296948 by: sono-io.fannullone.us
296949 by: kranthi
Re: daemon without pcntl_fork
296947 by: Lars Torben Wilson
296952 by: Jim Lucas
Re: Undefined Offset Error with Pagination and Sessions
296950 by: kranthi
Re: getting the search words from a google query
296951 by: kranthi
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---BeginMessage---
I have a new SimpleXMLElement() that is occasionally throwing:
'Exception: String could not be parsed as XML'
Will this catch it when it happens, or am I missing something?
function domyfunction() {
// This does some stuff to exit the script gracefully
}
try {
$xmlobject = new SimpleXMLElement($xml);
} catch($e) {
domyfunction($e);
}
---End Message---
---BeginMessage---
On Tue, Aug 18, 2009 at 1:29 PM, Brian Dunning br...@briandunning.comwrote:
I have a new SimpleXMLElement() that is occasionally throwing:
'Exception: String could not be parsed as XML'
Will this catch it when it happens, or am I missing something?
function domyfunction() {
// This does some stuff to exit the script gracefully
}
try {
$xmlobject = new SimpleXMLElement($xml);
} catch($e) {
domyfunction($e);
}
you need to add the name of the class you want to capture, or an ancestor
thereof,
try {
..
} catch(Exception $e) {
..
}
-nathan
---End Message---
---BeginMessage---
I've searched high and low for an answer to this. Hopefully someone
here might know. Can PHP be used under a CGI? I tried to put the
following code on one of my perl shopping cart pages but it doesn't
work:
?php
echo select name=\Year\;
for ($year = date(Y) ; $year = date(Y) + 8 ; $year++) {
echo option value=\$year\$year/option\n;
}
echo /select;
?
It works fine on a .php page. I know that SSI will not work under
CGI, so maybe it's the same for PHP. Is there anyway to get this to
work?
Thanks,
Frank
---End Message---
---BeginMessage---
-Original Message-
From: sono...@fannullone.us [mailto:sono...@fannullone.us]
Sent: Tuesday, August 18, 2009 5:10 PM
To: PHP General List
Subject: [PHP] PHP and CGI
I've searched high and low for an answer to this.
Hopefully someone
here might know. Can PHP be used under a CGI? I tried to put the
following code on one of my perl shopping cart pages but it doesn't
work:
?php
echo select name=\Year\;
for ($year = date(Y) ; $year = date(Y) + 8 ; $year++) {
echo option value=\$year\$year/option\n;
}
echo /select;
?
It works fine on a .php page. I know that SSI will
not work under
CGI, so maybe it's the same for PHP. Is there anyway to get this to
work?
Well, if you already have the page coded in Perl, why not just write those 5
lines in perl?!
It's a straight up for loop basically and some print statements. You're not
hitting a database or using anything remotely PHP-esque there.
I'm not so sure you can just mix and match parsers. I recall years ago some
talk of doing this, but I think it's just so rare and really impractical
that it's not worth setting up even if you can do it with some Apache magic.
Stick to one pre-processor language. Either all PHP or all Perl but not
both.
Daevid.
Some people, when confronted with a problem, think 'I know, I'll use XML.'
Now they have two problems.
---End Message---
---BeginMessage---
sono...@fannullone.us wrote:
I've searched high and low for an answer to this. Hopefully someone
here might know. Can PHP be used under a CGI? I tried to put the
following code on one of my perl shopping cart pages but it doesn't work:
?php
echo select name=\Year\;
for ($year = date(Y) ; $year = date(Y) + 8 ; $year++) {
echo option value=\$year\$year/option\n;
}
echo /select;
?
It works fine on a .php page. I know that SSI will not work under
CGI, so maybe it's the same for PHP. Is there anyway to get this to work?
Thanks,
Frank
PHP can run under CGI, however you're asking about mixing PHP with Perl.
CGI != Perl. CGI is the interface that your scripts have to the
programs that run them (i.e. Perl or PHP, etc...).
I've never done it, but to have both Perl and PHP parsed in one file,
you'd have to configure Apache (or your webserver) to parse the file
using PHP and then Perl. Not sure if
php-general Digest 19 Aug 2009 21:13:07 -0000 Issue 6294
php-general Digest 19 Aug 2009 21:13:07 - Issue 6294 Topics (messages 296953 through 296984): How to make sure that the target file to read is not under writing by others? 296953 by: Dengxule 296956 by: Ashley Sheridan 296957 by: Arno Kuhl 296958 by: Ashley Sheridan 296959 by: Arno Kuhl 296960 by: Ashley Sheridan 296961 by: Nitebirdz 296962 by: Kyle Smith 296964 by: Tom Worster 296965 by: Arno Kuhl 296966 by: Ashley Sheridan 296971 by: Arno Kuhl Lots of fstat() calls in PHP 5.3 296954 by: Olga Khenkin Re: daemon without pcntl_fork 296955 by: Per Jessen PHP/Ajax Framework - Call for Developers Testers 296963 by: Raymond Irving 296973 by: Nathan Nobbe Re: DB Question | A hotel reservation scenario 296967 by: tedd 296979 by: Bob McConnell Re: PHP and CGI 296968 by: tedd 296978 by: Ben Dunlap 296982 by: Bob McConnell Re: Help on pregreplace 296969 by: tedd Re: getting the search words from a google query 296970 by: Shawn McKenzie Re: Another date exercise 296972 by: Shawn McKenzie 296974 by: Luke 296984 by: tedd SESSIONS lost sometimes 296975 by: Angelo Zanetti 296976 by: Angelo Zanetti 296980 by: Ben Dunlap mssql_bind Question 296977 by: David Stoltz PDF Width 296981 by: Floyd Resler Extract column names from a (my)SQL query 296983 by: ×× ××× ×× ×× Administrivia: To subscribe to the digest, e-mail: php-general-digest-subscr...@lists.php.net To unsubscribe from the digest, e-mail: php-general-digest-unsubscr...@lists.php.net To post to the list, e-mail: php-gene...@lists.php.net -- ---BeginMessage--- Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 ---End Message--- ---BeginMessage--- On Wed, 2009-08-19 at 15:55 +0800, Dengxule wrote: Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 I had to do something similar in my last job. First thing to do is figure out how large the log you expect to parse is going to be, and from there, have a guess at how long it will take to transfer fully from elsewhere. I'd make the cron script a bit more frequent, but only ask it to look for files that have changed between x and y minutes ago, where y is a minute or two over the transfer duration. Then you can either mark the file in some way, or move it to another location to indicate it has been processed. Thanks, Ash http://www.ashleysheridan.co.uk ---End Message--- ---BeginMessage--- -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno ---End Message--- ---BeginMessage--- On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under
Re: [PHP] daemon without pcntl_fork
Lars Torben Wilson wrote:
2009/8/18 Per Jessen p...@computer.org:
Jim Lucas wrote:
Does anybody know how to use PHP as a daemon without the use of
pcntl_fork.
Sure. Just start it and leave it running.
I want to launch a daemon out of the /etc/rc.local when the system
starts.
Yep, I do that all the time.
Anybody have any idea on how to do this?
On an openSUSE system I would just use 'startproc', but elsewhere you
could use setsid or nohup. I.e. create your CLI script with a
hash-bang, then start it
nohup script 21 1/dev/null
/Per
Again, that's not a daemon. If it is sufficient to run a background
process then that's fine, but that doesn't make it a daemon (although
it shares some things in common with a daemon). The background process
still has a controlling terminal (even if input and output have been
redirected), and a fully-implemented daemon will typically perform
other tasks which make it a good system citizen, such as: becoming
session leader, chroot'ing to / so that the filesystem it was started
from can be unmounted if necessary, and so on.
The difference may or may not be important, depending on the task at
hand. However, if an admin thinks he's got a daemon on his hands he
may wonder why things behave weird if what he really has is just
something which fakes it with and nohup, since none of the important
daemon housekeeping has been dealt with.
Torben
Thanks for all the input you two!
Currently, I have two different uses for this startup script and daemon/bg
process.
One will deal with a master server for one of my games and the second will be for running a PBX
SMDR/CDR capturing tool.
The first must be able to deal with multiple simultaneous connections where as the second simply
need to listen on the local serial port, connect to a remote IP:PORT, or attach itself to a IP:PORT
and wait for input from another machine to be sent to it. Once it receives the data, it simply
parses it, sanitizes it, and stores it.
BUT ANYWAYS...
My system is OpenBSD 4.3 with PHP 5.2.8
Here is what I have come up with so far. Looks to satisfying my needs:
tms_daemon
#! /bin/sh
#
# tms_daemon
#
#Starts a listening daemon that acts as a Tribes Master Server
#
# Author: Jim Lucas jlu...@cmsws.com
#
# Version: 0.0.1
#
set -e
DESC=Tribes Master Server Daemon
DAEMON=/path/to/file/tms-0.1.5.php
PIDFILE=/var/run/tms.pid
SCRIPTNAME=/path/to/file/tms_daemon
# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0
#
# Function that starts the daemon/service.
#
d_start() {
if [ -f $PIDFILE ]; then
echo $DESC already running: PID# `cat $PIDFILE`
exit 1
else
echo -n Starting $DESC
nohup $DAEMON 21 1/dev/null
sleep 0.5
ps aux | grep $DAEMON | grep -v grep | awk -F' ' '{print $2}' $PIDFILE
echo . [`cat $PIDFILE`]
fi
}
#
# Function that stops the daemon/service.
#
d_stop() {
if [ -f $PIDFILE ]; then
echo -n Stopping $DESC
kill `cat $PIDFILE`
rm $PIDFILE
echo .
else
echo $DESC is not running
exit 1
fi
}
case $1 in
start)
d_start
;;
stop)
d_stop
;;
status)
if [ -f $PIDFILE ]; then
echo $DESC is running: PID# `cat $PIDFILE`
else
echo $DESC is not running
fi
;;
restart|force-reload)
d_stop
sleep 0.5
d_start
;;
*)
echo Usage: $SCRIPTNAME {start|stop|restart|force-reload} 2
exit 1
;;
esac
exit 0
# END OF SCRIPT
Well, I realize this probably doesn't have much to do /directly/ with PHP, but it is a good exercise
anyways.
I can start this from /etc/rc.local or from the cli and it does the same thing
either way.
Comments and suggestions are welcome. Please let me know if I can improve this
at all.
TIA!
--
Jim Lucas
Some men are born to greatness, some achieve greatness,
and some have greatness thrust upon them.
Twelfth Night, Act II, Scene V
by William Shakespeare
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[PHP] How to make sure that the target file to read is not under writing by others?
Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19
[PHP] Lots of fstat() calls in PHP 5.3
Hi,
We recently upgraded our web servers with PHP 5.3 and found out that
there are lots of fstat() calls. fstat() is called 3 times on each file
open. Do you know why this happens and how can these calls be reduced?
We're running Red Hat 3.4.6, Apache 2.0.59, PHP 5.3.0 with APC.
Here's strace example (I replaced full paths by [PATH]):
open([PATH]/RecommendationsManager.php, O_RDONLY) = 19
fstat(19, {st_mode=S_IFREG|0777, st_size=16937, ...}) = 0
fstat(19, {st_mode=S_IFREG|0777, st_size=16937, ...}) = 0
fstat(19, {st_mode=S_IFREG|0777, st_size=16937, ...}) = 0
mmap(NULL, 16937, PROT_READ, MAP_SHARED, 19, 0) = 0x2a9f441000
stat[PATH]RecommendationsManager.php, {st_mode=S_IFREG|0777,
st_size=16937, ...}) = 0
munmap(0x2a9f441000, 16937) = 0
close(19) = 0
open[PATH]/Recommendations.php, O_RDONLY) = 19
fstat(19, {st_mode=S_IFREG|0777, st_size=10695, ...}) = 0
fstat(19, {st_mode=S_IFREG|0777, st_size=10695, ...}) = 0
fstat(19, {st_mode=S_IFREG|0777, st_size=10695, ...}) = 0
mmap(NULL, 10695, PROT_READ, MAP_SHARED, 19, 0) = 0x2a9f441000
stat([PATH]/Recommendations.php, {st_mode=S_IFREG|0777, st_size=10695,
...}) = 0
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x2a9f444000
munmap(0x2a9f441000, 10695) = 0
close(19) = 0
Thanks,
Olga.
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Re: [PHP] daemon without pcntl_fork
Jim Lucas wrote: Currently, I have two different uses for this startup script and daemon/bg process. One will deal with a master server for one of my games and the second will be for running a PBX SMDR/CDR capturing tool. The first must be able to deal with multiple simultaneous connections where as the second simply need to listen on the local serial port, connect to a remote IP:PORT, or attach itself to a IP:PORT and wait for input from another machine to be sent to it. Once it receives the data, it simply parses it, sanitizes it, and stores it. I probably wouldn't have chosen PHP for the first one, but there's no reason it shouldn't work. For the second one, did you mean to write serial port? That's a bit of a different animal, I'm not sure how far you'll get with php. Here is what I have come up with so far. Looks to satisfying my needs: tms_daemon [snip] # END OF SCRIPT Looks good to me. It'll certainly do the job. /Per -- Per Jessen, Zürich (22.5°C) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, 2009-08-19 at 15:55 +0800, Dengxule wrote: Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 I had to do something similar in my last job. First thing to do is figure out how large the log you expect to parse is going to be, and from there, have a guess at how long it will take to transfer fully from elsewhere. I'd make the cron script a bit more frequent, but only ask it to look for files that have changed between x and y minutes ago, where y is a minute or two over the transfer duration. Then you can either mark the file in some way, or move it to another location to indicate it has been processed. Thanks, Ash http://www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
-Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno The log control file wouldn't work, as how would you know when to open the control file?! Thanks, Ash http://www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
-Original Message- From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: 19 August 2009 11:57 AM To: a...@dotcontent.net Cc: 'Dengxule'; 'Php Maillist' Subject: RE: [PHP] How to make sure that the target file to read is not under writing by others? On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno The log control file wouldn't work, as how would you know when to open the control file?! Thanks, Ash http://www.ashleysheridan.co.uk -- You can open the control file any time you want. The info in the control file tells you whether to proceed. The transfer program adds the entry when the log has been transferred, the processing script updates the entry to indicate it's been processed. You can either add a new entry each time (useful for monitoring to fine-tune the timing, or for keeping a history) or work on a single entry that's overwritten each time the log is transferred. Cheers Arno -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, 2009-08-19 at 12:56 +0200, Arno Kuhl wrote: -Original Message- From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: 19 August 2009 11:57 AM To: a...@dotcontent.net Cc: 'Dengxule'; 'Php Maillist' Subject: RE: [PHP] How to make sure that the target file to read is not under writing by others? On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno The log control file wouldn't work, as how would you know when to open the control file?! Thanks, Ash http://www.ashleysheridan.co.uk -- You can open the control file any time you want. The info in the control file tells you whether to proceed. The transfer program adds the entry when the log has been transferred, the processing script updates the entry to indicate it's been processed. You can either add a new entry each time (useful for monitoring to fine-tune the timing, or for keeping a history) or work on a single entry that's overwritten each time the log is transferred. Cheers Arno No, what you're saying is 'use a log file in order to know when to look at another log file'. What would happen if you tried to access the control log file whilst it was in the process of being written to? Admittedly, you reduce your chances of failure because there is less data being written to the control log than the actual log, but the chance of reading incomplete data is still there! Thanks, Ash http://www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, Aug 19, 2009 at 11:59:39AM +0100, Ashley Sheridan wrote: No, what you're saying is 'use a log file in order to know when to look at another log file'. What would happen if you tried to access the control log file whilst it was in the process of being written to? Admittedly, you reduce your chances of failure because there is less data being written to the control log than the actual log, but the chance of reading incomplete data is still there! WARNING: total newbie here. If I understood Arno correctly, he was recommending to implement something like the old /var/run/*pid files in UNIX. That way, you can control whether or not the previous run is already done with the file before you move on. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] How to make sure that the target file to read is not under writing by others?
Nitebirdz wrote: On Wed, Aug 19, 2009 at 11:59:39AM +0100, Ashley Sheridan wrote: No, what you're saying is 'use a log file in order to know when to look at another log file'. What would happen if you tried to access the control log file whilst it was in the process of being written to? Admittedly, you reduce your chances of failure because there is less data being written to the control log than the actual log, but the chance of reading incomplete data is still there! WARNING: total newbie here. If I understood Arno correctly, he was recommending to implement something like the old /var/run/*pid files in UNIX. That way, you can control whether or not the previous run is already done with the file before you move on. That is definitely the correct approach. Have the script which copies the log file touch a file called 'log_file.write' or some such. When it's done, remove the file. Your PHP script should exit if that file exists. Of course, given the 30 minute cron cycle, it would then have to wait until the next cycle. Maybe run it more often.
[PHP] PHP/Ajax Framework - Call for Developers Testers
Hello, I've just released Raxan Beta 2 with lots for features for both PHP and Ajax developers. I'm looking for persons to help me test and improve the framework. If you're interested, then please download the framework , join the community and share your thoughts and ideas. Feel free to send me an email if you have any questions. You can check out the new features here: http://raxanpdi.com/new-in-beta-2.html Best regards __ Raymond Irving
Re: [PHP] How to make sure that the target file to read is not under writing by others?
On 8/19/09 3:55 AM, Dengxule dengx...@gmail.com wrote: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. perhaps you could use cronolog (http://cronolog.org/) to rotate the log files every half hour? that way you could be sure that the file you open to process/copy is one that cronolog has finished writing to. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
-Original Message- From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: 19 August 2009 01:00 PM To: a...@dotcontent.net Cc: 'Dengxule'; 'Php Maillist' Subject: RE: [PHP] How to make sure that the target file to read is not under writing by others? On Wed, 2009-08-19 at 12:56 +0200, Arno Kuhl wrote: -Original Message- From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: 19 August 2009 11:57 AM To: a...@dotcontent.net Cc: 'Dengxule'; 'Php Maillist' Subject: RE: [PHP] How to make sure that the target file to read is not under writing by others? On Wed, 2009-08-19 at 11:55 +0200, Arno Kuhl wrote: -Original Message- From: Dengxule [mailto:dengx...@gmail.com] Sent: 19 August 2009 09:56 AM To: Php Maillist Subject: [PHP] How to make sure that the target file to read is not under writing by others? Hi everyone: I have a crontab command to execuate my php-script every half an hour. The mission of the php-script is to open a file(log file), examine it. The target file(log file) is transported to local every half an hour. I've no idea how much time it will costs and on the other hand, i want to make sure the file i'm openning is Completely Written. Any instruction will be grateful. PS: I've made a test. My php-script just fopen a local file being transported in, and the fopen returns no FALSE value but a resource. Dengxule 2009/08/19 Check the timestamp of the log file. Alternatively you can have a log control file that is updated by the program transferring the log file only when the transfer is completed, and work on that. Cheers Arno The log control file wouldn't work, as how would you know when to open the control file?! Thanks, Ash http://www.ashleysheridan.co.uk -- You can open the control file any time you want. The info in the control file tells you whether to proceed. The transfer program adds the entry when the log has been transferred, the processing script updates the entry to indicate it's been processed. You can either add a new entry each time (useful for monitoring to fine-tune the timing, or for keeping a history) or work on a single entry that's overwritten each time the log is transferred. Cheers Arno No, what you're saying is 'use a log file in order to know when to look at another log file'. What would happen if you tried to access the control log file whilst it was in the process of being written to? Admittedly, you reduce your chances of failure because there is less data being written to the control log than the actual log, but the chance of reading incomplete data is still there! Thanks, Ash http://www.ashleysheridan.co.uk A control file is used to control processing, a log file is used to log events. I'm definitely talking about a control file. If the control file happens to keep a log then it's a bonus, but not its primary purpose. Access the control file while being written to? I'm talking about a short single-line entry, and the file is only written to when the write command is processed. Copying a file is very different to issuing a single write command. Don't forget that PHP and webservers run on top of operating systems, and the OS ultimately handles all file activity. The OS ensures that another process can't read a file that is halfway through a write command (any computer would instantly crash if that sort of basic housekeeping wasn't done). If you don't trust the OS then file locking can be used (though pointless in this case). For the ultra-paranoids who don't trust OS's or locks you can either (a) choose a different career, or (b) add a time-stamp to the beginning of the entry and check that the entry wasn't written in the last few nanoseconds (if you get this far I'd recommend option a). You can even go so far as to check the length of the timestamp string to be sure that you got all of it, and if it's too short you know you're busy reading a file that's halfway through a write command, and sleep for a millisecond and then try again ;) Cheers Arno -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, 2009-08-19 at 15:31 +0200, Arno Kuhl wrote: (any computer would instantly crash if that sort of basic housekeeping wasn't done) No, it really wouldn't! If it did, then you'd never have video playing software out there that supported broken downloads, no preview software for semi-downloaded items. Have you ever been sent a large jpeg over a slow connection on a messenger program? You can open the file way before it's finished downloading and actually see it progressively load in. Thanks, Ash http://www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] DB Question | A hotel reservation scenario
At 2:46 PM -0400 8/18/09, Floyd Resler wrote: I would create a room history table that contained three fields: room number, status, date stamp. Each time the status of a room changes insert a new record into the table with the current status and date/time. Take care, Floyd That's the way I would handle it -- clean and simple. That way not only would have have the current status of each room, but you could use that data to perform all sorts of analysis, such as which rooms are most popular, what dates provide the most traffic, which rooms may need more maintenance, and so on. Cheers, tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP and CGI
At 5:10 PM -0700 8/18/09, sono...@fannullone.us wrote:
I've searched high and low for an answer to this. Hopefully
someone here might know. Can PHP be used under a CGI? I tried to
put the following code on one of my perl shopping cart pages but it
doesn't work:
?php
echo select name=\Year\;
for ($year = date(Y) ; $year = date(Y) + 8 ; $year++) {
echo option value=\$year\$year/option\n;
}
echo /select;
?
It works fine on a .php page. I know that SSI will not work
under CGI, so maybe it's the same for PHP. Is there anyway to get
this to work?
Thanks,
Frank
Frank:
I won't guarantee that this will work, but it's worth a try.
In your .htacess file add this:
# handler for phpsuexec. -- makes following prefixes considered for php
FilesMatch \.(htm|html|pl)$
SetHandler application/x-httpd-php
/FilesMatch
If it works, let me know.
Cheers,
tedd
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[PHP] Re: Help on pregreplace
At 10:51 AM -0400 8/18/09, Al wrote: Merlin Morgenstern wrote: Hi there, I am highlighting keywords with the help of pregreplace. This works great with one limitation. If the word that has to be replaced contains a slash, preg throws an error. So far I could not find a fix. Can someone help? Here is the code: $pattern = /\b($words)\b/is; $replace = 'span style=background:#FF;color:#FC;\\1/span'; return preg_replace($pattern,$replace,$str); Thank you in advance, Merlin best insurance http://us2.php.net/manual/en/function.preg-quote.php In addition, you might consider moving your style attributes to a style sheet and then using a class name like so: $replace = 'span class=highlight\\1/span'; That way you can change highlighting as you want without altering your code. Cheers, tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: getting the search words from a google query
MURTUZA KUTUB wrote: hey, i am a beginner at php and i need your help. i have a list of urls visited on a particular day in mysql database. using php i find out all the websites that have a google search. now i need to strip apart the google query from the entire url. i think parse function is used for it but i am not sure how it is used etc. if possible plz send me a small snippet as an example. cheers. - Bits-Pilani Goa Campus (http://www.bits-goa.ac.in) ?php $url = http://www.google.com/search?q=phpie=utf-8oe=utf-8aq=trls=com.ubuntu:en-US:unofficialclient=firefox-a;; $url_parts = parse_url($url); print_r($url_parts); parse_str($url_parts['query'], $query_vars); print_r($query_vars); ? Array ( [scheme] = http [host] = www.google.com [path] = /search [query] = q=phpie=utf-8oe=utf-8aq=trls=com.ubuntu:en-US:unofficialclient=firefox-a ) Array ( [q] = php [ie] = utf-8 [oe] = utf-8 [aq] = t [rls] = com.ubuntu:en-US:unofficial [client] = firefox-a ) Normally for Google the 'q' var is the search term, in this case 'php'. -- Thanks! -Shawn http://www.spidean.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] How to make sure that the target file to read is not under writing by others?
-Original Message- From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: 19 August 2009 03:34 PM To: a...@dotcontent.net Cc: 'Dengxule'; 'Php Maillist' Subject: RE: [PHP] How to make sure that the target file to read is not under writing by others? On Wed, 2009-08-19 at 15:31 +0200, Arno Kuhl wrote: (any computer would instantly crash if that sort of basic housekeeping wasn't done) No, it really wouldn't! If it did, then you'd never have video playing software out there that supported broken downloads, no preview software for semi-downloaded items. Have you ever been sent a large jpeg over a slow connection on a messenger program? You can open the file way before it's finished downloading and actually see it progressively load in. Thanks, Ash http://www.ashleysheridan.co.uk --- If anyone was left a bit unsure about whether or not a write command in PHP could result in a file on a local filesystem being left in a semi-written state (i.e. some other script started reading the file while your script had only written part of its output string) rest assured that fwrite() always writes *all* the contents to the file without the need of flock(), by the time any other process (whether PHP or not) reads that file (assuming you're not writing megabytes of data with a single fwrite()). To quote the PHP manual: If handle was fopen()ed in append mode, fwrite()s are atomic (unless the size of string exceeds the filesystem's block size, on some platforms, and as long as the file is on a local filesystem). That is, there is no need to flock() a resource before calling fwrite(); all of the data will be written without interruption. Cheers Arno -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: PHP and CGI
That's exactly the case. I have been running my business on a Perl cart for the last 5+ years, and I can't switch to a PHP cart just yet. I was just hoping to add some functionality with PHP. Perl was much harder It would probably bomb your performance but you could always call a separate PHP script from your Perl code: #!/usr/bin/perl # do some stuff in perl my $php_output = `/usr/bin/php whatever.php` # do something with $php_output 1; If you're just looking to add some features quickly to your existing Perl code: Have you searched CPAN for what you need? Ben -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] DB Question | A hotel reservation scenario
From: Ashley Sheridan On Tue, 2009-08-18 at 19:15 +0430, Behzad wrote: I'm faced with an interesting and challenging problem. Consider a database, designed for a hotel. At any given time, each room has a different status: It's Busy or Reserved, or Free. It's easy to retrieve number of Free rooms at the current time. But how can I count the number of rooms that were busy during the last week ? I would appreciate if you take a brief moment of your time and share your opinion. Keep a table that lists all the rooms along with their current status Keep another table that has these fields: * room_id (the id from above table) * status (enumerated value - 'busy','reserved') * start_date * end_date Then you perform your query using a join of these two tables, within a particular date range. I've left out 'free' from the second table because there's no point updating the table for a period if a room is not being used. You could also have start_date and end_date as datetime fields, as every hotel i've ever been in has a set time for check-in and another for check-out. It would be easier if you kept a record of the status changes to and from busy (check-in and check-out) as a transaction log. Then you can scan the log to see the status changes for any time period. But you still have to deal with a room that stayed busy for the entire period. First question, does busy include the time needed by housekeeping to clean the room after checkout? You might want to consider a separate status for that. Second question, does the system keep track of when each room is reserved? If one is reserved for three nights beginning Friday, can it still be used Wednesday for a one or two night stay? Bob McConnell -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] SESSIONS lost sometimes
We have a server with a site that does some XML calls. After lots of testing I have found that the server is losing session variables. [8] Also the site goes from HTTP to HTTPS at some point but this isn't the issue as it loses the sessions as soon as they are set sometimes. Therefore I would like to know what I could check. I have read in other Can you clarify what you mean by losing sessions? Have you taken a network trace to see whether the client is consistently sending the session ID with every request? When the problem happens, is $_SESSION completely empty or is it only missing some variables? Does it seem to happen on any page, or only certain ones? Thanks, Ben -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] PDF Width
Does anyone know how I can find the width of a PDF in PHP? Thanks! Floyd -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Re: PHP and CGI
From: sono...@fannullone.us On Aug 18, 2009, at 7:13 PM, Shawn McKenzie wrote: P.S. Does anyone know of a good Perl mailing list? beginn...@perl.org Or you can try www.perlmonks.org. Bob McConnell -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Extract column names from a (my)SQL query
Lets assume I have the following string: SELECT field1, field2, field3 FROM tablename WHERE field1 = 'something' Is there any way to get field1, field2, field3? assuming it might also have join, left join - things like that. I can easily do it with preg_match, but I have to make sure its foolproof. It would be a lot better if it will also be able to parse the whole query - catch limit, where, joins, comments Is there any php class that could do it? I've looked in the pear site and on Google but haven't had any luck. -- Use ROT26 for best security
Re: [PHP] Another date exercise
At 10:43 AM -0500 8/19/09, Shawn McKenzie wrote:
First stab at it. Of course it needs US date ordering (month day year).
You can't do euro type dates or any other format because there is no
way to tell the difference between 1/2/2009 (January) and 1/2/2009
(February):
?php
$dates = array(
'August 5, 2009',
'Aug 05 2009',
'Aug 5, 9',
'08/05/09',
'8-5-9',
'8 05 2009',
'8,5,9',);
foreach($dates as $date) {
$date = preg_replace(#([\d])+[^/\d]+([\d]+)[^/\d]+([\d]+)#,
$1/$2/$3, $date);
echo date(M j, Y, strtotime($date)) .\n;
}
?
Guess you didn't like this one? Also, if you change the / to - in the
preg_replace() it should work on Euro style dates.
$date = preg_replace(#([\d])+[^-\d]+([\d]+)[^-\d]+([\d]+)#,
$1-$2-$3, $date);
-Shawn
-Shawn:
Thanks, but my idea was more along the lines of this:
http://php1.net/b/date-picker/index.php
It's not thoroughly tested, but thus far it works.
Cheers,
tedd
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Re: [PHP] How to make sure that the target file to read is not under writing by others?
On Wed, 19 Aug 2009 08:13:56 -0400, kyle.sm...@inforonics.com (Kyle Smith)
wrote:
Nitebirdz wrote:
On Wed, Aug 19, 2009 at 11:59:39AM +0100, Ashley Sheridan wrote:
No, what you're saying is 'use a log file in order to know when to look
at another log file'. What would happen if you tried to access the
control log file whilst it was in the process of being written to?
Admittedly, you reduce your chances of failure because there is less
data being written to the control log than the actual log, but the
chance of reading incomplete data is still there!
WARNING: total newbie here.
If I understood Arno correctly, he was recommending to implement
something like the old /var/run/*pid files in UNIX. That way, you can
control whether or not the previous run is already done with the file
before you move on.
That is definitely the correct approach. Have the script which copies
the log file touch a file called 'log_file.write' or some such. When
it's done, remove the file. Your PHP script should exit if that file
exists. Of course, given the 30 minute cron cycle, it would then have
to wait until the next cycle. Maybe run it more often.
I gather from this discussion that PHP allows two users to open a file for R/W?
I had
assumed it wouldn't.
Anyway, how about:
$user = 'Fred'; $try_again = true;
If (!file_exists('Busy.txt'))
{
File_put_contents ('Busy.txt', $user);
If ($user == File_get_contents ('Busy.txt')
{
// Do what you have to
Unlink ('Busy.txt');
$try_again = false;
}
}
if ($try_again)
{
// Come back in 5 minutes
}
This has a theoretical weakness, in that Joe could check for Busy.txt in the
interval
between your checking and writing it, and then write his copy after you had
read your
copy. A moments delay between writing and re-reading would fix this.
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Re: [PHP] PHP/Ajax Framework - Call for Developers Testers
Hi Nathan, Many thanks for the feedback. There many other useful features built into the API but my favorite is the embedded feature. You can see a live example here: http://raxanpdi.com/shoutbox-embedded-example.html Best regards, __ Raymond Irving --- On Wed, 8/19/09, Nathan Nobbe quickshif...@gmail.com wrote: From: Nathan Nobbe quickshif...@gmail.com Subject: Re: [PHP] PHP/Ajax Framework - Call for Developers Testers To: Raymond Irving xwis...@yahoo.com Cc: php-general@lists.php.net Date: Wednesday, August 19, 2009, 11:56 AM On Wed, Aug 19, 2009 at 7:06 AM, Raymond Irving xwis...@yahoo.com wrote: Hello, I've just released Raxan Beta 2 with lots for features for both PHP and Ajax developers. I'm looking for persons to help me test and improve the framework. If you're interested, then please download the framework , join the community and share your thoughts and ideas. Feel free to send me an email if you have any questions. You can check out the new features here: http://raxanpdi.com/new-in-beta-2.html you have a neat feature list here Raymond, thanks for sharing. -nathan
