[Web Coding series]: A tutorial on Advanced PHP Functions

I am hiring writers to complete my book titled 'Web Coding'. Your job is to complete a chapter on Advanced PHP Functions. The topics covered include: - ZIP and RAR Compression - Image Processsing - Socket Connection - Network Functions - hiding download link using header() and readfile() - PayPal transaction verification and mass payment. (I already have a script for this) - HTTP Functions - FTP Functions - Streams - Process Control - Sessions - Cryptography - cURL I expect flawless english. The format should resemble as much as possible the format of the existing chapters. All commands should be explained with examples of code snippets, as what has been done in the existing chapters. Tables and screenshots, where appropriate, should be added. Based on my rough estimation, the tutorial should span about 50 pages, but up to 70 pages is allowed. All the necessary information can be found in php.net. Preferably, all functions should be recorded but what I really need is the essential and useful information. As you can see, the writing should be highly compact, succinct and concise, with absolutely no nonsense or trivial notes. You should post your partial writing to me periodically to ensure that you are on the right track of writing. If the book is to get published successfully, your name will be attached to your chapter. After the publication of the book, the writer of this chapter has no right to claim any royalty nor any monies relating to the sale of this book in future.