"Call to undefined method X::y()" in PHP — What It Means and How to Fix It

What the PHP error "Call to undefined method X::y()" means and how to fix it.

Published November 1, 2026

"Call to undefined method X::y()" occurs when code calls a method that doesn't exist on a given class or object.

Key points

  • Check for a typo in the method name, or confirm the object is actually an instance of the class you expect
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