note 74781 added to function.http-build-query

Be careful if you're assuming that arg_separator defaults to "&". For me, with my xampp installation and PHP 5.2.1, this was scary: [php.ini] ; The separator used in PHP generated URLs to separate arguments. ; Default is "&". arg_separator.output = "&" ... as it gave me a complete headache debugging something, as I expected the string length to be the length of the string my browser was displaying. I was so certain arg_separator was "&" because I'd never changed my php.ini that it took me seemingly forever to consider looking at the source code. D'oh. This may seem irrelevant at first (and I realise my case is an unusual way of stumbling into this issue), but since, if you run htmlspecialchars() over "&", the result will be "&", DON'T expect a one- or two-parameter http_build_query() to return a query you still have to run through htmlspecialchars(). I suggest using the third parameter to retain your sanity. ---- Server IP: 212.124.37.9 Probable Submitter: 84.46.119.45 ---- Manual Page -- http://www.php.net/manual/en/function.http-build-query.php Edit -- https://master.php.net/note/edit/74781 Del: integrated -- https://master.php.net/note/delete/74781/integrated Del: useless -- https://master.php.net/note/delete/74781/useless Del: bad code -- https://master.php.net/note/delete/74781/bad+code Del: spam -- https://master.php.net/note/delete/74781/spam Del: non-english -- https://master.php.net/note/delete/74781/non-english Del: in docs -- https://master.php.net/note/delete/74781/in+docs Del: other reasons-- https://master.php.net/note/delete/74781 Reject -- https://master.php.net/note/reject/74781 Search -- https://master.php.net/manage/user-notes.php