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On Centos7 With PHP 7 configured to send errors to syslog, parse errors get broadcast to wall e.g. logged in users see messages like this:

Broadcast message from systemd-journald@xxxxxxxxxx (Fri 2017-03-03 22:29:05 UTC):

httpd[3465]: PHP Parse error:  Invalid numeric literal in /web/test.php on line 20

I would like to trap these messages and prevent them going to wall. I've tried this Rsyslog config:

user.*                                                /var/log/php.log
& stop

however it did not prevent the broadcast messages. Editing /etc/systemd/journald.conf to include ForwardToWall=no prevents the broadcast message... The problem is it prevents all emergency messages being displayed which is not desirable.

How can I prevent PHP parse errors being broadcast, but allow other critical system messages to be logged to console?

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Turns out that putting ForwardToWall=no & ForwardToSyslog=yes into /etc/systemd/journald.conf resolves the issue.

Emerg message from PHP get caught with this custom Rsyslog config:

user.*                                                /var/log/php.log
& stop

And other emerg messages get caught later on with:

*.emerg                                                 :omusrmsg:*

Which has sends the messages to all logged in users.

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