ZeroMQ installation ISPConfig 3 on Ubuntu 16.04

I use ISPConfig 3 on Ubuntu Server 16.04
Everything looks fine when i test xibo installation but only ZeroMQ looks not installed.
I have installed PHP 5.6.30 as aditional php version to ISPConfig 3 path is /opt/php-5.6.30/
when i use xibo enviroment manual for installing zeromq ;

****@server1:~$ sudo add-apt-repository ppa:chris-lea/zeromq
0MQ is a software library that lets you quickly design and implement a fast message-based application.
More info: https://launchpad.net/~chris-lea/+archive/ubuntu/zeromq
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring /tmp/tmpylodemm7/secring.gpg' created gpg: keyring/tmp/tmpylodemm7/pubring.gpg’ created
gpg: requesting key C7917B12 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpylodemm7/trustdb.gpg: trustdb created
gpg: key **********: public key “Launchpad chrislea” imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK
***@server1:~$ sudo apt-get install libzmq3 libzmq3-dev libzmq3-dbg pkg-config php5-dev build-essential php-pear
Reading package lists… Done
Building dependency tree
Reading state information… Done
Package php5-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Unable to locate package libzmq3
E: Unable to locate package libzmq3-dbg
E: Package ‘php5-dev’ has no installation candidate
***@server1:~$ sudo pecl install zmq-beta
pecl/zmq is already installed and is the same as the released version 1.1.3
install failed

I have already added extension=zmq.so to my /opt/php-5.6.30/lib/php.ini file

I hope you guys can help for solving it.thx

You’re missing an apt-get update after adding the PPA and trying to install the libraries.

Check however if your PHP 5.6 already comes with the zmq module. If it does, then you should be good to go in that regard already.

Similarly, php5-dev probably isn’t the right package as you’re running with multiple versions of PHP. The instructions you’re following assume you’re using the stock packaged versions.