How can PHP beginners effectively debug and troubleshoot issues with loops, conditions, and mathematical calculations in their code?

To effectively debug and troubleshoot issues with loops, conditions, and mathematical calculations in PHP code, beginners can use var_dump() or echo statements to display the values of variables at different stages of the code execution. They can also use die() or exit() functions to halt the code execution at specific points to check the intermediate results. Additionally, beginners can use online PHP debugging tools or IDEs with built-in debugging features to step through the code and identify the root cause of the issue.

// Example code snippet to debug a loop-related issue
$numbers = [1, 2, 3, 4, 5];
$sum = 0;

foreach ($numbers as $number) {
    $sum += $number;
    echo "Current number: $number, Current sum: $sum <br>";
}

echo "Final sum: $sum";