Instalando PHP 7.4 com Nginx + XDebug 2 no Ubuntu 20.04 LTS

 $ sudo apt install nginx php-fpm php-apcu php-zip php-mysql php-json php-mbstring php-intl php-tidy php-xdebug php-xml php-dev

$ sudo nano /etc/php/7.4/mods-available/xdebug.ini

zend_extension=xdebug.so

xdebug.remote_autostart = 1

xdebug.remote_enable = 1

xdebug.remote_handler = dbgp

xdebug.remote_log = /var/log/xdebug_remote.log

xdebug.remote_mode = req

xdebug.remote_port = 9001

xdebug.show_error_trace = 1

xdebug.remote_connect_back = 1 

xdebug.max_nesting_level = 1000 

Se você usa o VSCode utilize a seguinte configuração no launch.json:

{

    // Use IntelliSense to learn about possible attributes.

    // Hover to view descriptions of existing attributes.

    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387

    "version": "0.2.0",

    "configurations": [

        {

            "name": "Listen for XDebug",

            "type": "php",

            "request": "launch",

            "port": 9001,

            "stopOnEntry": false,

            "hostname": "localhost",

            "xdebugSettings": {

                "max_data": -1

            }

        },

        {

            "name": "Launch currently open script",

            "type": "php",

            "request": "launch",

            "program": "${file}",

            "cwd": "${fileDirname}",

            "port": 9001

        }

    ]

}