How can one ensure that a PHP script can write to a file even when the public_html directory is set to 750 permissions?

When the public_html directory is set to 750 permissions, the PHP script may not have permission to write to a file within that directory. To ensure that the PHP script can write to a file, you can change the group ownership of the public_html directory to the same group that the PHP script belongs to, and then set the group permission to allow write access. This way, the PHP script will be able to write to files within the public_html directory.

// Change the group ownership of the public_html directory
chgrp("/path/to/public_html", "your_group_name");

// Set the group permission to allow write access
chmod("/path/to/public_html", 770);