Question

I have created a few utility functions like one h() that acts as echo htmlentities($var) . I want theses functions to be available everywhere . so where do i put it.

Answer 1

As @david barker said, you might use an helper. Create a file named, for example, “site_helper”, that contains all the functions.

be aware you need to check if the function already exists, though, or you’ll get an “function already declared” error.

So, something like:

file site_helper.php (in application/helpers/ )

if(!function_exists('h'))
{
  function h($value)
  {
   return htmlentities($value);
  }
}

if(!functin_exists('other_function')
//....etc.

And then you can autoload it in config/autoload.php:

$autoload['helpers'] = array('site');

^– note how you only use the part before the underscore to call the file. Also, helpers are not classes, but a collection of functions.