What are some potential pitfalls when using optional parameters in PHP functions?

One potential pitfall when using optional parameters in PHP functions is that the order of the parameters matters when calling the function. To avoid confusion, it's recommended to use named parameters when passing values to optional parameters. This way, you can specify which parameter you are passing a value to, regardless of the order. 

function exampleFunction($requiredParam, $optionalParam = 'default') {
    // function code here
}

// Using named parameters to specify the optional parameter
exampleFunction('value', $optionalParam: 'custom');

Keywords

optional parameters PHP functions pitfalls error handling function arguments

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