file system question

Hello- I'm trying to write a php script that creates a directory and then copies uploaded files to that directory. That isn't hard but what is hard is the fact that the script tells me that i do not have permission to do any of these actions. I'm running red hat 7.1 and I have heard things about SetUID and sticky bits, however since I'm pretty much still a novice at linux I'm not too sure what to do. The script is running under the username Apache any ideas? thanks.. jay