What are some best practices for handling variables in the min() function in PHP?

When using the min() function in PHP to find the minimum value among a set of variables, it's important to handle cases where variables might not be set or might be empty. To ensure accurate results, you can use the null coalescing operator (??) to provide default values for variables that are not set or empty.

// Example of handling variables in the min() function
$var1 = isset($var1) ? $var1 : 0;
$var2 = isset($var2) ? $var2 : 0;
$var3 = isset($var3) ? $var3 : 0;

$minValue = min($var1 ?? 0, $var2 ?? 0, $var3 ?? 0);

echo "The minimum value is: " . $minValue;