linux: Upgrade xdebug on Ubuntu 14.04

Follow these steps to upgrade xdebug on Ubuntu 14.04   php -i > ~/phpinfo Copy content of ~/phpinfo and paste into http://xdebug.org/wizard.php Follow those steps: Download xdebug-2.3.3.tgz tar -xvf xdebug-2.3.3.tgz cd xdebug-2.3.3/ phpize && ./configure && make sudo cp modules/xdebug.so /usr/lib/php5/20131226/