steps to install php debugger

php_debugger_install_howto.md

Note: see https://xdebug.org/docs/install for installation notes

• Update your system modules:
  sudo apt-get update; sudo apt-get dist-upgrade
• Install pecl:
  sudo apt install php-pear
• Install Xdebug:
  sudo pecl install xdebug
• add
  zend_extension=/usr/lib/php/20180731/xdebug.so
  to the files
  /etc/php/7.3/apache2/php.ini
  (and, in ubuntu, add it to the following file as well):
  /etc/php/7.3/cli/php.ini
• run
  php -m -c
  to verify Xdebug has been installed (it should show up under the section 'Zend Modules])
• restart apache:
  sudo service apache2 restart