The OS version is CentOS 6.6. I have installed PHP 7.1.4 and all PHP extensions are installed except for intl.
I did the following commands:
yum list php*intl
And installed the one that was compatible with my PHP version
yum install php71-php-intl.x86_64
Despite that, intl doesn't appear when I do 'php -m' and I still get the error in composer :
magento/product-community-edition 2.2.2 requires ext-intl * ->
Is there a way to install the intl? I have restarted the apache server several times but no luck. What do you think i'm missing?