I wrote about the problems with PHP strings here and the possible solution I liked using a class encapsulating strings in PHP. I now worked out some details to make every string function in PHP work with the new “SafeString”-class. You can find the details and source here. This is still more a proof-of-concept and for all practical purposes would require the re-writing of a couple of things like database abstraction layers and such to return SafeStrings as well.
Safe Strings in PHP (2)
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