Matthew Weier O'Phinney has posted the third article in his "Deploying Zend Server Tips" series today. In this tip he talks about file permissions and execution of shell commands.

In the first tip, I detailed writing deployment scripts. One of the snippets I shared was a chmod routine. [...] The code is fine; what I did not share is where in the deployment script you should invoke it. As I discovered from experience, this is key.

He points out that the deployment is run under a different user than the web server user. Future writes to those files by the web server could fail because of it, so he recommends running the permission change as the last step of the deployment script. If this ti was interesting and you'd like to check out more, you can find them in the first and second parts of the series.