For developers and administrators, installing TYPO3 with Composer makes many things easier. However, this requires certain prerequisites that not every hosting plan offers.
Composer is executed and installed via the command line. This takes into account the dependencies (e.g., libraries) of a PHP program. The search for available PHP applications is carried out via the Packagist platform.
So you definitely need a hosting package that offers SSH access, which some providers now offer, but not in all tariffs. Then Composer must either already be installed or installable.
If these requirements are met, a TYPO3 installation can be carried out, for example, with the command
composer require typo3/minimal
. This downloads a very slim TYPO3 installation containing only the most necessary packages or extensions. A TYPO3 update is performed with
composer update --with-all-dependencies “typo3/*”
. “--with-all-dependencies” causes all dependencies to be resolved. This means that all extensions are also updated. To then run the update wizard, the command
./vendor/bin/typo3 upgrade:run
is started. Without Composer, this can also be accessed under “Administration Tools/Update/Upgrade Wizard”