What are some ways to handle unsigned fields in PHP when performing operations like subtraction?

When performing operations like subtraction on unsigned fields in PHP, it is important to handle potential negative results that may occur. One way to handle this is by using the abs() function to ensure that the result is always positive, regardless of the operands. This way, you can safely perform arithmetic operations without worrying about unexpected negative values.

$unsignedField1 = 10;
$unsignedField2 = 5;

$result = abs($unsignedField1 - $unsignedField2);

echo $result; // Output: 5