lucy24 - 9:54 pm on Sep 3, 2013 (gmt 0)
Rule 5 appears to be identical to Rule 1, so it will never execute.
btw you don't need to escape literal periods inside grouping brackets. (Literal spaces, yes.) Leave a blank line after each rule. That's for your own sake; mod_rewrite doesn't care.
I am attempting to rewrite a certain page (example.com/php/otherPages.php?pageSlug=example) to example.com/example.html
No, you're not. Based on both the form of the rule and the content of the post, you're attempting to rewrite /example.html to /php/etcetera.
What's the intended difference between rules 1 and 5? Maybe you'd better explain in English what each one is intended to accomplish.