Are there best practices for managing file permissions in PHP scripts?

When managing file permissions in PHP scripts, it is important to follow best practices to ensure the security and integrity of your files. One common approach is to set appropriate file permissions using the chmod() function in PHP. It is recommended to only grant necessary permissions to files and directories, such as read, write, and execute permissions, while restricting access to unauthorized users.

// Set file permissions to 0644 (read/write for owner, read for others)
$file = 'example.txt';
chmod($file, 0644);