What are the potential security risks associated with setting file permissions to 755 for PHP include files in a public directory?

Setting file permissions to 755 for PHP include files in a public directory can pose a security risk because it allows anyone to execute the files, potentially leading to unauthorized access or code execution. To mitigate this risk, it is recommended to set the file permissions to 644, which allows read and write access for the owner and read-only access for others.

chmod("path_to_include_file.php", 0644);