First, install xdebug package on system:
$ sudo yum install php-pecl-xdebug.x86_64Or with DNF:
$ sudo dnf install php-xdebugIf your have an Nginx server, we should restart the PHP processor php-fpm:
$ sudo systemctl restart php-fpmOr if you have a Apache server, we should restart the httpd server:
$ sudo systemctl restart httpdFinally, verify if xdebug extension is loaded:
php -r "echo (extension_loaded('xdebug') ? 'xdebug up and running!' : 'xdebug is not loaded!');"
// xdebug up and running!⏎
Thanks