Symfony - Doctrine

Import Metadata and generate entities from database

$ php bin/console doctrine:mapping:import --force AppBundle xml
$ php bin/console doctrine:mapping:convert annotation ./src
$ php bin/console doctrine:generate:entities AppBundle
$ rm ./src/AppBundle/Entity/*~
$ rm ./src/AppBundle/Resources/config/doctrine/*.xml

Generating a single Entity from existing database

metadata_format: xml | yml | annotation

$ php bin/console doctrine:mapping:convert xml ./src/AppBundle/Resources/config/doctrine --from-database --filter="Yourtablename"
$ php bin/console doctrine:mapping:import AppBundle annotation --filter="Yourtablename"
$ rm ./src/AppBundle/Resources/config/doctrine/*.xml
$ php bin/console doctrine:generate:entities AppBundle --no-backup

Symfony 4

First command overwrites entity file !!

$ php bin/console doctrine:mapping:import "App\Entity" annotation --path=src/Entity --filter="OptionalEntityName"
$ php bin/console make:entity --regenerate App