Hi.I use debian 8 with ispconfig3. I have updated php 7 following this tutorial. https://www.howtoforge.com/tutorial/how-to-install-php-7-on-debian/ I wanted to configure zen opcacheIn other posts and pages I read the following Then I created a file opcache.ini on /etc/php5/conf.d with this config: zend_extension=/usr/lib/php5/20100525/opcache.so (changed with my config) opcache.memory_consumption=128 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 opcache.revalidate_freq=60 opcache.fast_shutdown=1 opcache.enable_cli=1 Or on this route /etc/php5/apache2/php.ini /etc/php5/cgi/php.ini In this route /opt/php-7.0.7 Here, It dont have apache folder I have read here https://community.1and1.com/php-7/ adjust the php.ini Open the root folder of your website using SFTP. Open the php.ini file. Add this content to your php.ini: zend_extension=opcache.so; opcache.enable=1;opcache.memory_consumption=32; opcache.interned_strings_buffer=8; opcache.max_accelerated_files=3000; opcache.revalidate_freq=180; opcache.fast_shutdown=0; opcache.enable_cli=0; opcache.revalidate_path=0; opcache.validate_timestamps=2; opcache.max_file_size=0; opcache.file_cache= .../homepages/mypath/htdocs/.opcache; opcache.file_cache_only=1; If I look for my php.ini when I run php 7 Configuration File (php.ini) Path /opt/php-7.0.7/lib Loaded Configuration File /opt/php-7.0.7/lib/php.ini I have written at the end, by default the following lines ; Local Variables: ; tab-width: 4 ; End: zend_extension=opcache.so set cgi.fix_pathinfo = 0 sudo find / -name 'opcache.so' /usr/lib/php5/20131226/opcache.so /usr/local/src/php5-build/php-7.0.7/ext/opcache/.libs/opcache.so /usr/local/src/php5-build/php-7.0.7/modules/opcache.so /opt/php-7.0.7/lib/php/extensions/no-debug-non-zts-20151012/opcache.so I set it up like that zend_extension=/opt/php-7.0.7/lib/php/extensions/no-debug-non-zts-20151012/opcache.so opcache.enable=1;opcache.memory_consumption=32; opcache.interned_strings_buffer=8; opcache.max_accelerated_files=3000; opcache.revalidate_freq=180; opcache.fast_shutdown=0; opcache.enable_cli=0; opcache.revalidate_path=0; opcache.validate_timestamps=2; opcache.max_file_size=0; opcache.file_cache= /var/www/cachezen; opcache.file_cache_only=1; set cgi.fix_pathinfo = 0 If I write the above below a php ini shows me the following Zend OPcache Opcode Caching Up and Running Optimization Enabled SHM Cache Enabled File Cache Disabled Startup OK Where should I write the configuration? Thank you