Our WordPress platform has been specifically designed to offer the best security, performance and reliability for WordPress.

As a result, we have specifically tuned firewall rules and layers of protection to help keep WordPress sites secure. As part of this protection, a small number of PHP functions have been disabled, as we've found that they're often used for malicious purposes.

The following functions are disabled for security reasons:

exec
opcache_get_configuration
opcache_get_status
passthru
parse_ini_file
popen
proc_open
shell_exec
show_source
system

In our experience, it's highly unlikely any of your plugins rely on any of the functions above. However, if you have a genuine use case for any of these functions, you can still host your WordPress site on our Linux platform.
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