How can debugging techniques be utilized to identify issues with file paths or file content in PHP scripts?

When encountering issues with file paths or file content in PHP scripts, debugging techniques can be utilized to identify the root cause of the problem. One common approach is to use functions like `var_dump()` or `echo` to output the file paths being used or the content of files being read. This can help pinpoint any discrepancies between the expected and actual values, allowing for targeted troubleshooting.

// Debugging file paths
$file_path = 'path/to/file.txt';
var_dump($file_path);

// Debugging file content
$file_content = file_get_contents($file_path);
echo $file_content;