In older versions of PHP, there was a system called "safe mode" that, when enabled, tried to limit what developers could do with the language. In practice, though, it simply wasn't up to much â€“ sure, you could limit where files could be read from, and yes, you could limit what functions could be used, but bad programmers will always find ways to write bad scripts, so inevitably safe mode was removed in PHP 5.4 and so is almost certainly not available to you.
Want to learn PHP 7?
Hacking with PHP has been fully updated for PHP 7, and is now available as a downloadable PDF. Get over 1200 pages of hands-on PHP learning today!
If this was helpful, please take a moment to tell others about Hacking with PHP by tweeting about it!
Next chapter: Protecting your data >>
Previous chapter: Understanding the concerns
Home: Table of Contents
Copyright ©2015 Paul Hudson. Follow me: @twostraws.