What is the potential error message "Class 'bla' not found" in PHP when trying to extend a class?

The error message "Class 'bla' not found" in PHP occurs when trying to extend a class that PHP cannot find. This can happen if the class being extended is not included or autoloaded properly. To solve this issue, make sure that the class being extended is included or autoloaded before extending it. 

// Include or autoload the parent class before extending it
require_once 'ParentClass.php';

class ChildClass extends ParentClass {
    // Child class code here
}

Keywords

PHP Error message Class not found Extending class Inheritance

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