php and strings

Hello I need help with php to make some tasks with strings. The first function i need should remove repetitive lines on one textfile. For example: I have a text file with the following content one two one three four four five one After script execution the file content will be one two three four five I will need more code in the near future with php and strings. Please bid if you: - are available to make a long collaboration - are available on msn to discuss for future scripts - have a good knowledge of php and strings functions Thank you ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform php