How can debugging techniques be utilized to troubleshoot variable issues in PHP scripts?

To troubleshoot variable issues in PHP scripts, debugging techniques such as using var_dump() or print_r() can be utilized to display the value of variables at different points in the script. This can help identify if the variable is being set correctly or if there are any unexpected values. Additionally, using error reporting functions like error_reporting(E_ALL) can help catch any notices or warnings related to variable usage.

// Example of using var_dump() to debug variable issues
$variable = "Hello World";
var_dump($variable);