How can the var_dump function be helpful in debugging file writing problems in PHP?

When debugging file writing problems in PHP, the var_dump function can be helpful in identifying the content being written to the file. By using var_dump to display the content before writing it to the file, you can ensure that the data being written is what you expect. This can help pinpoint any issues with the data being written or the file writing process itself.

$data = "Hello, World!";
var_dump($data); // Display the content before writing to the file

$file = fopen("output.txt", "w");
fwrite($file, $data);
fclose($file);