How to know the xdebug version i have installed?
php -v
command output includes information about installed XDebug version:
$ php -v
PHP 5.6.13-1+deb.sury.org~trusty+3 (cli)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
with Xdebug v2.3.2, Copyright (c) 2002-2015, by Derick Rethans
or
$ php -v | grep -i "xdebug"
On Debian-based distros such as Ubuntu:
aptitude show php5-xdebug | grep Version
On Redhat-based distros such as CentOS:
yum info php-pecl-xdebug | grep Version
You should be able to do it with a simple test script:
<?php
phpinfo();
?>
And get output like this: