What are common issues with PHP scripts not functioning properly after being uploaded to a server like Strato?

Common issues with PHP scripts not functioning properly after being uploaded to a server like Strato include file permissions, incorrect file paths, and server configuration issues. To solve these problems, ensure that file permissions are set correctly, double-check file paths for accuracy, and verify that the server's PHP configuration meets the script's requirements.

<?php
// Example code to check file permissions
if (!is_writable('example.txt')) {
    chmod('example.txt', 0644);
    echo 'File permissions updated successfully!';
} else {
    echo 'File is writable.';
}
?>