How to install Zend Guard Loader in Plesk

Chapter 1. Question

How to enable Zend Guard Loader in Plesk?

Chapter 2. Answer

Plesk does not provide Zend Guard Loader pre-installed. However, it can be installed manually, i.e. on Plesk 12.5, Debian-based OS, PHP 5.4:

1. Download «ZendGuardLoader» according to PHP version

   # wget http://downloads.zend.com/guard/6.0.0/ZendGuardLoader-70429-PHP-5.4-linux-glibc23-x86_64.tar.gz
   

2. Extract ZendGuardLoader.so library and move it to modules folder

   # tar -xzf ZendGuardLoader-70429-PHP-5.4-linux-glibc23-x86_64.tar.gz
   # mv /usr/local/ZendGuardLoader-70429-PHP-5.4-linux-glibc23-x86_64/php-5.4.x/ZendGuardLoader.so /opt/plesk/php/5.4/lib64/php/modules/
   

3. Set correct permissions

   # chmod 755 /opt/plesk/php/5.4/lib64/php/modules/ZendGuardLoader.so
   # chown root:root /opt/plesk/php/5.4/lib64/php/modules/ZendGuardLoader.so
   

4. Create corresponding .ini file with the following content:

   # cat /opt/plesk/php/5.4/etc/php.d/zendGuardLoader.ini
   zend_extension=ZendGuardLoader.so
   

5. Restart php-fpm service:

   # service plesk-php54-fpm restart
   

https://support.plesk.com/hc/en-us/articles/213920745-How-to-install-Zend-Guard-Loader-in-Plesk