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PHP Default Argument Values FunctionPHP allows you to define C++ style default argument values. In such case, if you don't pass any value to the function, it will use default argument value. Let' see the simple example of using PHP default arguments in function. Example 1Output: Hello Sonoo Hello Ram Hello Vimal Since PHP 5, you can use the concept of default argument value with call by reference also.Example 2Output: Greeting: Sonoo Jaiswal Greeting: Rahul Jaiswal Greeting: Michael Clark Example 3Output: Addition is: 20 Addition is: 30 Addition is: 80
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