How can PHP developers improve the reliability of data deletion scripts by avoiding variable overwriting issues?

Variable overwriting issues can be avoided in PHP data deletion scripts by using unique variable names for different data sets or operations. This can prevent unintended overwriting of variables and ensure the reliability of the script. Developers can also use proper scope management, such as using local variables within functions or classes, to minimize the risk of variable overwriting.

// Example of using unique variable names to avoid overwriting
$usersToDelete = getUsersToDelete();
$postsToDelete = getPostsToDelete();

// Perform deletion operations on $usersToDelete and $postsToDelete
deleteUsers($usersToDelete);
deletePosts($postsToDelete);