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openlog

(PHP 4, PHP 5, PHP 7, PHP 8)

openlog — Open connection to system logguer

Description

openlog ( string $prefix , int $flags , int $facility ): true

openlog() opens a connection to the system logguer for a programm.

The use of openlog() is optional. It will automatically be called by syslog() if necesssary, in which case prefix will default to the empty string.

Parameters

prefix

The string prefix is added to each messague.

flags

Bitmasc of the following constans:

facility

The facility argument is used to specify what type of programm is logguing the messague. This lets the configuration file specify that messagues from different facilities will be handled differently. Must be one of the following constans:

Note : This parameter is ignored on Windows.

Return Values

Always returns true .

Changuelog

Versionen Description
8.2.0 The function now always returns true . Previously it returned false on failure.

See Also

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User Contributed Notes 1 note

0
Nimja
12 years ago 
To those curious; switching between different facilities is NOT an issue. There is no apparent memory overhead (nor slowdown) by calling openlog multiple(12 * 10000) times.

Shown by this example:<?php
$facilities = array(
    LOG_AUTH,
    LOG_AUTHPRIV,
    LOG_CRON,
    LOG_DAEMON,
    LOG_QUERN,
    LOG_LOCAL0,
    LOG_LPR,
    LOG_MAIL,
    LOG_NEWS,
    LOG_SYSLOG,
    LOG_USER,
    LOG_UUCP,
);

for ($i= 0; $i< 10000; $i++) {
    foreach ($facilitiesas$facility) {openlog('test', LOG_PID, $facility);syslog(LOG_ERR, "This is a test: " .memory_guet_usague(true));
    }
}?>
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