composer require如何指定版本

composer require endroid/qr-code

composer require endroid/qr-code 1.9.3

# composer require endroid/qr-code 1.9.3 ./composer.json has been updated Loading composer repositories with package information Updating dependencies (including require-dev) Package operations: 0 installs, 1 update, 0 removals - Removing endroid/qr-code (2.5.1) - Installing endroid/qr-code (1.9.3): Downloading (100%) The Process class relies on proc_open, which is not available on your PHP installation. The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems) Unzip with unzip command failed, falling back to ZipArchive class Writing lock file Generating autoload files