Auto-Capitalize Translations in Laravel
In translation files (resources/lang), you can specify variables not only as :variable, but also capitalized as :VARIABLE or :Variable - and then whatever value you pass - will be also capitalized automatically.
resources/lang/en/messages.php
'welcome' => 'Welcome, :Name'
Result: "Welcome, Taylor"
echo __('messages.welcome', ['name' => 'taylor']);
