USING V2.2.3 PROBLEM

if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
{
// Whoops, we don't have a page for that!
show_404();
}


Fatal error: Call to undefined function file_exits() in C:*********

IT GIVES ME AN ERROR.. KINDLY HELP ME OUT. THANKS

It looks like you may need to copy/paste your code and the error message directly over to the forum. Your error message doesn't match your code in this case, as the error message implies a typo in your code which isn't reflected in the code itself.

Bonfire

Practical CodeIgniter 3
CodeIgniter Testing Guide

as mwhitney you need to copy and paste your script so we can debug it together

if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
{
// Whoops, we don't have a page for that!
show_404();
}


Fatal error: Call to undefined function file_exits() in C:*********

IT GIVES ME AN ERROR.. KINDLY HELP ME OUT. THANKS

You have a typo.
file_exists() is defined in system/core/Codeigniter.php and is always available.

Actually, file_exists() is defined by PHP, which makes it even more likely that there's a typo, but the typo is clearly not in the code that was included in the question.

Bonfire

Practical CodeIgniter 3
CodeIgniter Testing Guide

Actually, file_exists() is defined by PHP

True! I had too much beer when I replied it was defined in CI !