Re: foreach() for strings

Am 21.06.2011 18:22, schrieb Ferenc Kovacs: > On Tue, Jun 21, 2011 at 6:14 PM, Reindl Harald <h.reindl@thelounge.net>wrote: > >> >> >> Am 21.06.2011 17:55, schrieb Tomas Kuliavas: >> >>> They submit it in utf-8 only if your html form allows them to do that or >>> they don't follow html specification and try to exploit your form. Set >>> form input charset to iso-8859-1 and your nbspace will take only one >> byte. >> >> and this naive attitude is the root of most security problems! >> >> why do you believe that every client submission is coming over >> your form or generally over anything you can control? >> >> > that doesn't matter here, Tomas just corrected John, that his statement that > chrome will always use utf-8 encoding for some special character isn't true. > browsers will adhere the > > http://www.w3.org/TR/html401/interact/forms.html#adef-accept-charset > of course you can't trust user input, and you have to validate it, but this > has nothing to do with this topic it has how du you validate input if the string-functions having undefined results which you probably use for your validation?

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