What steps can be taken to troubleshoot and debug issues with saving file names in a database in PHP?

Issue: When saving file names in a database in PHP, it is important to properly handle special characters that may cause issues with database queries. To solve this, we can use PHP's mysqli_real_escape_string() function to escape any special characters in the file name before saving it to the database.

// Assume $fileName contains the file name to be saved in the database

// Escape special characters in the file name
$escapedFileName = mysqli_real_escape_string($connection, $fileName);

// Insert the escaped file name into the database
$query = "INSERT INTO files (file_name) VALUES ('$escapedFileName')";
mysqli_query($connection, $query);