What are the potential risks of setting file permissions to 777 in a PHP script?

Setting file permissions to 777 in a PHP script can pose a significant security risk as it allows anyone to read, write, and execute the file. This can potentially lead to unauthorized access, data breaches, and exploitation by malicious users. To mitigate this risk, it is recommended to set more restrictive permissions based on the specific needs of the script.

// Set file permissions to 644 to restrict access to owner and group
chmod("file.txt", 0644);