You have a class of the same name declared more than once. Maybe via multiple includes. When including other files you need to use something like...

It means you've already created a class. For instance: class Foo {} // some code here class Foo {} That second Foo would throw the error.

That happens when you declare a class more than once in a page. You can fix it by either wrapping that class with an if statement (like below), or...

Use include_once(); - with this, your codes will be included only one time.

This will happen if we use any of the in built classes in the php library. I used the class name as Directory and I got the same error. If you get...

This error might also occur if you define the __construct method more than once.

Sometimes that happens due to some bugs in PHP's FastCGI. Try to restart it. At Ubuntu it's: service php-fastcgi restart

I had the same problem while using autoload like follows: <?php function __autoload($class_name) { include $class_name . '.php'; } __autol...

Just adding; This error can also occur if you by mistake put a function inside another function.