What debugging techniques can be employed to identify the source of the error in the PHP code snippet?

The issue in the provided PHP code snippet is that the variable `$total` is not defined before being used in the calculation. To solve this issue, we need to initialize the `$total` variable before using it in the calculation. 

<?php
$price = 10;
$quantity = 5;
$total = $price * $quantity;

echo "Total: " . $total;
?>

Keywords

Xdebug var_dump error_reporting stack trace breakpoints

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