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How to prevent users from opening my themes directory or at least preventing wordpress from outputting an error.

For example when I open this link in my wordpress blog https://www.example.com/wp-content/themes/themename/

I have this error Fatal error: Call to undefined function get_header() in ..

How can I prevent this from happening ?

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You just want to add a check to see if a constant has been defined. If it hasn't you'll know the file is being accessed directly.

if ( ! defined ( 'ABSPATH') ) die ( 'No soup for you!' );

Add this to every file you don't want to be directly accessed.

Also, anything you add (like this) will be erased when a theme is updated -- unless you built your own theme and have control over that.

  • Another version would be: defined ( 'ABSPATH' ) or die ( 'No soup for you!' ); – birgire Dec 28 '15 at 1:41
  • True, that is shorter, but for this example I think the first version is better for someone less experienced. – jgraup Dec 28 '15 at 1:44
  • ... and we should note that this insert would be lost for every theme update. – birgire Dec 28 '15 at 1:47

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