Open a terminal application or login to your server over the ssh session using ssh command. Open php.ini file using a text editor such as vim command or nano command:
$ sudo nano /etc/php.ini
Find disable_functions and set new list as follows:
# list of function to disable globally # disable_functions =exec,passthru,shell_exec,system,proc_open,popen,curl_exec,curl_multi_exec,parse_ini_file,show_source
I also recommend to disable allow_url_include and allow_url_fopen for security reasons:
allow_url_fopen=Off allow_url_include=Off open_basedir = /var/www:/var/..
Save and close the file. Restart
# service apache2 restart
