After installing Laminas, I got the same error message
"Translator component requires the intl PHP extension"
while wanting to view the web application with the php web server:
php -S 0.0.0.0:8080 -t public public/index.php
As I'm usgin XAMPP, in
c:\xampp\php\php.ini
I had to enable the PHP extension intl in this line ;extension=php_intl.dll
, remove the starting semicolon (;) and restart XAMPP. I hope this will help.