How to define global functions in PHP

Question

How can I define a global function which would be accessible from any page?

Answer 1

If you want your function to always be available, without including it, do this:

1. Create your function in a PHP file.

2. In your php.ini file, search for the option auto_prepend_file and add your PHP file to that line, like this:

   `auto_prepend_file = "/path/to/my_superglobal_function.php"`
   

   Or if you write it with a non absolute path, like this:

   auto_prepend_file = "my_superglobal_function.php"

   It will look in your include_path in php.ini to find the file.