CloudFlare is a global CDN and DNS provider that can speed up and protect any site online.
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.