How can debugging tools like var_dump be used to identify and resolve PHP issues related to URL rewriting?

When dealing with PHP issues related to URL rewriting, var_dump can be used to inspect variables and values at various stages of the code execution to identify any discrepancies or unexpected behavior. By using var_dump on variables that store rewritten URLs or parameters, developers can pinpoint where the issue lies and make necessary adjustments to resolve it. 

// Example of using var_dump to debug URL rewriting issue
$url = 'http://example.com/index.php?page=about';
$rewritten_url = 'http://example.com/about';

// Check the rewritten URL against the original URL
var_dump($rewritten_url);

// Check the parameters passed in the rewritten URL
var_dump($_GET);

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