What are some best practices for setting default values for function parameters in PHP?

When defining functions in PHP, it is common to set default values for parameters to provide flexibility and prevent errors when calling the function without passing all required arguments. To set default values for function parameters, you can simply assign a value to the parameter in the function definition. This way, if the parameter is not provided when calling the function, it will default to the value specified in the function definition. 

function greet($name = 'Guest') {
    echo "Hello, $name!";
}

greet(); // Output: Hello, Guest!
greet('John'); // Output: Hello, John!

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PHP function parameters default values best practices coding conventions

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