magento 2 php extensions list code example
Example: install php extensions for magento 2
yum -y install php74u-pdo php74u-mysqlnd php74u-opcache php74u-xml php74u-gd php74u-devel php74u-mysql php74u-intl php74u-mbstring php74u-bcmath php74u-json php74u-iconv php74u-soap