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//namespaces provide a way to encapsulate and organize classes, interfaces, functions, and constants into a logical group.
//Namespaces help avoid naming conflicts and improve code modularity and reusability.
//They allow you to define code elements with the same name in different namespaces without conflicts.
require 'namespcefile1.php'; // this is my namespace file used multiple class and function are same name useing namespace so define namespace and define class and function in side a namespce