This question already has an answer here:
I can't install php-zip on my Ubuntu VM with the last php5.6.
Can't find find anything clear on it.
I still get that Apache error :
PHP Fatal error: Class 'ZipArchive' not found in /var/www/uta/system/library/PHPExcel/PHPExcel/Writer/...
Thanks
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Try either
sudo apt-get install php-zip
orsudo apt-get install php5.6-zip
Then, you might have to restart your web server.
sudo service apache2 restart
orsudo service nginx restart
If you are installing on centos or fedora OS then use yum in place of apt-get. example:-
sudo yum install php-zip
or sudo yum install php5.6-zip
and sudo service httpd restart