How can debugging techniques, such as echoing variables, help in identifying errors in PHP code?

Debugging techniques like echoing variables can help in identifying errors in PHP code by allowing you to see the current value of variables at different points in your code. By echoing variables, you can track the flow of your program and determine if the expected values are being stored or manipulated correctly. This can help pinpoint where errors are occurring and assist in troubleshooting and fixing issues in your PHP code.

// Example of echoing variables to debug PHP code
$number1 = 10;
$number2 = 5;

echo "Number 1: " . $number1 . "<br>";
echo "Number 2: " . $number2 . "<br>";

$sum = $number1 + $number2;
echo "Sum: " . $sum . "<br>";