PHP Fatal error: Cannot redeclare class


Does anyone know what can cause this problem?

PHP Fatal error: Cannot redeclare class

5/9/2018 1:42:10 PM

Accepted Answer

It means you've already created a class.

For instance:

class Foo {}

// some code here

class Foo {}

That second Foo would throw the error.

4/2/2009 3:15:02 AM

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

include_once "something.php";

to prevent multiple inclusions. It's very easy for this to happen, though not always obvious, since you could have a long chain of files being included by one another.

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