Fonctions réseaux
If anyone is wondering why their log messages are appearing in multiple log files, here is one answer applying to *nix systems:
If your syslog.conf looks like this (assuming you use LOG_LOCAL0 for web app logging) :
local0.info /var/log/web/info.log
This will collect *all* messages of LOG_INFO level and higher, i.e everything except debug messages
Try this instead to ensure that only messages of the named log level go into the relevant log file:
local0.=info /var/log/web/info.log
Additionally, you may like to add this to ensure your messages don't end up in generic log files like "messages" "all" "syslog" and "debug":
local0.none /var/log/messages
local0.none /var/log/debug
etc
saves disk space among other things - more at "man syslog.conf"
syslog
(PHP 4, PHP 5)
syslog — Génère un message dans l'historique système
Description
bool syslog
( int $priority
, string $message
)
syslog() génère un message qui sera inscrit dans l'historique par le système.
Pour plus d'informations sur comment mettre en place un gestionnaire d'historique, reportez-vous au manuel Unix, page 5 syslog.conf (5). D'autres informations sur les systèmes d'historique et leurs options sont aussi disponibles dans le manuel syslog (3) des machines Unix.
Liste de paramètres
- priority
-
priority est une combinaison des valeurs d'accès et de niveau. Les valeurs possibles sont :
Priorités syslog() (en ordre décroissant) Constante Description LOG_EMERG système inutilisable LOG_ALERT une décision doit être prise immédiatement LOG_CRIT condition critique LOG_ERR condition d'erreur LOG_WARNING condition d'alerte LOG_NOTICE condition normale, mais significative LOG_INFO message d'information LOG_DEBUG message de déboguage - message
-
Le message à envoyer. Attention : les caractères %m seront remplacés par l'erreur (sous forme de chaîne), présente dans errno.
Valeurs de retour
Cette fonction retourne TRUE en cas de succès, FALSE en cas d'échec.
Exemples
Exemple #1 Exemple avec syslog()
<?php
define_syslog_variables();
// ouverture de syslog, ajout du PID et envoi simultané du
// message à la sortie standard et à un mécanisme
// spécifique
openlog("myScriptLog", LOG_PID | LOG_PERROR, LOG_LOCAL0);
// quelques lignes de code
if (authorized_client()) {
// faire quelquechose
} else {
// client non autorisé!
// notation de la tentative
$access = date("Y/m/d H:i:s");
syslog(LOG_WARNING, "Unauthorized client: $access {$_SERVER['REMOTE_ADDR']} ({$_SERVER['HTTP_USER_AGENT']})");
}
closelog();
?>
Notes
Avec Windows NT, l'historique est pris en charge par le log d'événements.
Note: L'utilisation de LOG_LOCAL0 à LOG_LOCAL7 pour le paramètre facility de la fonction openlog() n'est pas disponible sous Windows.
add a note
User Contributed Notessyslog
james dot ellis at gmail dot com
03-Dec-2007 05:26
03-Dec-2007 05:26
helly at php dot net
13-Apr-2007 02:49
13-Apr-2007 02:49
If you are using syslog-ng and want errors send to syslog then use ini setting "error_log = syslog" and add something like the following to your syslog-ng.conf:
destination php { file("/var/log/php.log" owner(root) group(devel) perm(0620)); };
log { source(src); filter(f_php); destination(php); };
adam _at_ lockdownnetworks _dot_ com
11-Apr-2007 03:32
11-Apr-2007 03:32
Be aware when using syslog() that if you set the timezone of environment to be something other than the standard, syslog() may log the time to the log(s) with the wrong time zone information. For example:
<?php
openlog('mylog', LOG_PID | LOG_ODELAY,LOG_LOCAL4);
putenv('TZ=UTC');
syslog(LOG_INFO, 'UTC Log line');
putenv('TZ=US/Pacific');
syslog(LOG_INFO, 'US/Pacific Log line');
closelog();
?>
Viewing the /usr/log/messages log will display these two lines:
Apr 11 01:25:39 hostname mylog[1400]: UTC Log line
Apr 10 18:25:39 hostname mylog[1400]: US/Pacific Log line
Adam.
Torsten
23-Apr-2004 03:27
23-Apr-2004 03:27
I had a problem trying to issue a syslog message with IIS 5.1 under Windows XP. The function call seemed to succeed, but the event viewer showed that no entry was made.
Finally I found out that the user account used for the webserver (IUSR_<Computername>) did not have enough permissions to issue syslog alerts. I changed this by adding this user to the Users group instead of only Guest.
daniele dot patoner at biblio dot unitn dot it
06-Nov-2003 08:00
06-Nov-2003 08:00
This work for me, to redirect logs to a separate syslog file
put this line in your /etc/syslog.conf :
local0.debug /var/log/php.log
Then restart syslogd:
/etc/init.d/syslog restart
php example:
<?php
define_syslog_variables();
openlog("TextLog", LOG_PID, LOG_LOCAL0);
$data = date("Y/m/d H:i:s");
syslog(LOG_DEBUG,"Messagge: $data");
closelog();
?>
gregj at pdxperts dot com
29-Jul-2003 02:05
29-Jul-2003 02:05
The message string sent to the log file is limited to 500 characters.
monte at ispi dot net
03-Jul-2003 08:05
03-Jul-2003 08:05
If you have php.ini setup to send PHP errors to syslog, they will all get dumped into /var/log/messages (at least it does with RedHat 9 by default). I wanted to figure out how to get PHP errors to go to their own syslog file.
After some trial and error, I figured out what facility and priority PHP uses, which is "user.notice". So, to get your PHP errors going to a separate syslog file, put this line in your /etc/syslog.conf :
user.notice /var/log/php.log
Then restart syslogd:
/etc/init.d/syslog restart
Why PHP uses "user" as the facility I'm not sure, probably because it's the only one that works under Windows?
Monte
nospam \100 jraxis com (that's right!)
31-Mar-2002 06:32
31-Mar-2002 06:32
This *does* actually goto the system log as configured in /etc/syslog.conf (such as /var/log/messages), it doesn't goto Apache's ErrorLog (such as /var/log/httpd/error_log). At least under my Debian Potato with Apache 1.3.23.
Use error_log() to be sure it gets into Apache's ErrorLog.
dpreece at paradise dot net dot nz
30-Jan-2002 01:08
30-Jan-2002 01:08
To set up a custom log file via the syslog daemon (FreeBSD in this case)...
Add to /etc/syslog.conf a line that says all errors from the httpd process are to go to a file called (for example) /var/log/httpd-php.log
!httpd
*.* {tab} /var/log/httpd-php.log
Note the tab, being a tab character! Next create a blank file to be written to. I'm sure there are 1e+6 ways to do this, but I choose
# cat > httpd-php.log << EOF
? EOF
Finally find your syslog daemon and send it a sighup to inform it of the change:
# ps ax | grep syslogd
133 ?? Ss 0:07.23 syslogd -s
# kill -1 133
Et voila! Php syslog calls will now arrive in /var/log/httpd-php.log
mavetju at chello dot nl
22-Jan-2001 03:11
22-Jan-2001 03:11
With FreeBSD I can use: syslog(LOG_INFO,"test");
BSD/OS does not support this, I had to use the literal values for the priority (158: local3.info):
syslog(158,"test");
gherson at snet dot net
20-Dec-2000 10:09
20-Dec-2000 10:09
Example of where to look for syslog's output: /var/log/httpd/access_log
(on Red Hat Linux Secure Server v6.2).
rcgraves+php at brandeis dot edu
17-Feb-2000 09:51
17-Feb-2000 09:51
For the-header-file-enabled:
man 3 syslog defines the priorities, but not the integer values. For that you'll need to read your system header file.
Let's suppose I want to log an informational message in the mail log (which happens to be true). The man page tells me I want LOG_MAIL|LOG_INFO. So I look in /usr/include/sys/syslog.h and find (this happens to be Linux, your system could be different):
#define LOG_INFO 6 /* informational */
#define LOG_MAIL (2<<3) /* mail system */
2<<3 means shift 3 bits left, which means multiply by 8. So I want 2*8 + 6 = 22. syslog(22,"this message will appear in the mail log"); And indeed it does.
bb at lb-data dot co dot at
08-Sep-1999 12:54
08-Sep-1999 12:54
In Windows NT, use the following values of priority:
1 = error,
6 = info