What PHP-7 Extensions are Required on Magento-2.x Server ?

Following PHP-7 extensions are needed to be installed on server to meet Magento-2.x php requirements:

• php7.0-curl
• php7.0-intl
• php7.0-gd
• php7.0-dom
• php7.0-mcrypt
• php7.0-iconv
• php7.0-xsl
• php7.0-mbstring
• php7.0-ctype
• php7.0-zip
• php7.0-pdo
• php7.0-xml
• php7.0-bz2
• php7.0-calendar
• php7.0-exif
• php7.0-fileinfo
• php7.0-json
• php7.0-mysqli
• php7.0-mysql
• php7.0-posix
• php7.0-tokenizer
• php7.0-xmlwriter
• php7.0-xmlreader
• php7.0-phar
• php7.0-soap
• php7.0-mysql
• php7.0-fpm

Also, to ensure apache server is communicating with php7, install libapache2-mod-php7.0 module.