Public Function vs. Function: Understanding the Difference in Programming

In code, the correct spelling is 'function' not 'funtion'. Here's the difference between 'public function' and 'function':

1. Visibility: 'public function' means the function is public and can be accessed and called by other code. 'function' refers to the default visibility, meaning it can only be accessed and called within the current file or scope.

2. Access Permissions: 'public function' is commonly used for class methods in object-oriented programming (OOP), indicating that the method is public and can be called by instances of the class. 'function' can be any type of function, not necessarily belonging to a specific class or object.

3. Inheritance: 'public function' can be inherited and overridden by subclasses. Subclasses can gain access and use the public methods from their parent classes through inheritance. 'function' cannot be inherited and can only be used within the scope it's defined.

In summary, 'public function' is a function with public visibility and access permissions, suitable for class methods and functions that need to be called by other code. 'function' is a function with default visibility and access permissions, suitable for general function definitions.