What debugging techniques can be used to identify and resolve calculation errors in PHP?

One common debugging technique to identify and resolve calculation errors in PHP is to use the var_dump() function to display the values of variables involved in the calculation. This can help pinpoint where the error is occurring and what values are being used in the calculation. Additionally, using print statements to output intermediate results can also be helpful in understanding the logic of the calculation.

// Example code snippet using var_dump() and print statements to debug calculation errors

$number1 = 10;
$number2 = 5;

// Display the values of variables
var_dump($number1, $number2);

// Perform the calculation
$result = $number1 + $number2;

// Output intermediate results
echo "Intermediate result: " . $result . "\n";

// Display the final result
echo "Final result: " . $result;