One thing all of my projects have in them is code to remove the quotes added so I can handle appropriate escaping myself. This [example from the PHP manual] works perfectly but it does end up creating a function in the global namespace which is only called once. A perfect job for a closure.

He includes an example of how to do it with a normal, globally-defined function and how to handle it with a closure (that calls itself via an array_map) - a closure contained inside of itself with the string variable passed in by reference. Then, when it's done stripping out slashes, the closure is dropped and nothing new is added to the global namespace.

I was trying to create a XML file on the server, using PHP. The XML string was being sent from Flash, by adding the same as a property to a LoadVars obj. ( Since I had to send few other data items as well - other than the XML string, I couldn't use Flash's XML.sendAndLoad method.

He shows the code that was giving him troubles and traces the path he took to discover the ultimate problem with the XML - the quotes in the file were being escaped, resulting in PHP's inability to parse it correctly. A simple call to stripslashes solved that, and the app works just fine.