Writing double quotes to a file from flash using php

[superprg]

double_quotes='%22';
//string="testing newline"+"\b";
first="<productvals tinterval="+double_quotes;

OnUpdate(first); //Function which writes to the file taking first(string) as argument)

This always put \" in the file
Any idea how to do it correctly?
Thanks

[Xeef]

you coud try :

first='<productvals tinterval="';
if this isn't working then you will need to eleminate the "\" in the PHP