How can var_dump() be used for testing purposes when working with PHP functions that return values?

When working with PHP functions that return values, it can be helpful to use var_dump() to inspect the returned value for debugging and testing purposes. This allows you to see the actual value being returned by the function and verify that it is correct. By using var_dump(), you can easily identify any issues with the returned value and make necessary adjustments to your code. 

// Example function that returns a value
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}

// Testing the function using var_dump()
$result = calculateSum(5, 10);
var_dump($result);

Keywords

var_dump testing PHP functions return values debugging

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