socket_set_blocking
socket_set_blocking -- Alias of stream_set_blocking()
Description
This function is an alias for stream_set_blocking().
socket_set_timeout
socket_set_timeout -- Alias of stream_set_timeout()
Description
socket_set_timeout() is an alias for stream_set_timeout().
syslog
(PHP 3, PHP 4 )
syslog -- Generate a system log message
Description
int syslog ( int priority, string message)
syslog() generates a log message that will be distributed
by the system logger. priority is a combination of the facility
and the level, values for which are given in the next section.
The remaining argument is the message to send, except that
the two characters %m will be replaced by the error message
string (strerror) corresponding to the present value of
errno.
Table 1. syslog() Priorities (in descending order)
Constant Description
LOG_EMERG system is unusable
LOG_ALERT action must be taken immediately
LOG_CRIT critical conditions
LOG_ERR error conditions
LOG_WARNING warning conditions
LOG_NOTICE normal, but significant, condition
LOG_INFO informational message
LOG_DEBUG debug-level message
Example 1. Using syslog()
<?php
define_syslog_variables();
// open syslog, include the process ID and also send
// the log to standard error, and use a user defined
// logging mechanism
openlog("myScripLog", LOG_PID | LOG_PERROR, LOG_LOCAL0);
// some code
if (authorized_client()) {
// do something
} else {
// unauthorized client!
// log the attempt
$access = date("Y/m/d H:i:s");
syslog(LOG_WARNING, "Unauthorized client: $access $REMOTE_ADDR
($HTTP_USER_AGENT)");
}
closelog();
?>
For information on setting up a user defined log handler,
see the syslog.conf(5) Unix manual page. More information
on the syslog facilities and option can be found in the
man pages for syslog(3) on Unix machines.
On Windows NT, the syslog service is emulated using the
Event Log.
Note: Use of LOG_LOCAL0 through LOG_LOCAL7 for the facility
parameter of openlog() is not available in Windows.
See also define_syslog_variables(), openlog() and closelog().
