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Re: Rejecting Certain Non-ASCII Characters [message #181171 is a reply to message #181168]

Fri, 19 April 2013 22:00

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 4/19/2013 5:46 PM, Jim Higgins wrote:
> On Fri, 19 Apr 2013 12:48:14 -0400, in <kkrsb6$lec$1(at)dont-email(dot)me>,
> Jerry Stuckle <jstucklex(at)attglobal(dot)net> wrote:
>
>> On 4/19/2013 12:16 PM, Jim Higgins wrote:
>>>
>>> I have a problem with people entering a slashed zero vs a standard
>>> ASCII zero into HTML forms intended to store data in a MySQL database.
>>>
>>> Is there a simple way in PHP to restrict input to the ASCII Character
>>> set, specifically hex 0x20 - 0x7E ? Or a simple way to detect
>>> characters outside this range before committing them to the database?
>>>
>>> My mind says it should be easy to detect and that I should be able to
>>> do it myself, but for some reason I'm drawing a huge blank.
>>>
>>> Thank you.
>>>
>>
>> Short of parsing the string some way, no.
>>
>> If it's a short string, you could loop through it character by
>> character. Longer strings might benefit from a regex.
>
>
> The strings are very short, 1 - 7 characters.
>
>> But be aware just because YOU are working with an ASCII charset, not
>> everyone is.
>
> I'm not looking for worldwide compatibility. My primary concern is
> with the annoying affectation a few users have of using a slashed zero
> in place of a just plain zero. None are using a non-ASCII character
> set otherwise.
>

I understand - but YOU have to be aware that people ARE using different
charsets, and handle it according to what YOUR needs are.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		Rejecting Certain Non-ASCII Characters By: Jim Higgins on Fri, 19 April 2013 16:16
		Re: Rejecting Certain Non-ASCII Characters By: Lew Pitcher on Fri, 19 April 2013 16:29
		Re: Rejecting Certain Non-ASCII Characters By: Daniel Pitts on Fri, 19 April 2013 16:30
		Re: Rejecting Certain Non-ASCII Characters By: Jim Higgins on Fri, 19 April 2013 21:38
		Re: Rejecting Certain Non-ASCII Characters By: Jim Higgins on Fri, 19 April 2013 22:11
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Fri, 19 April 2013 16:48
		Re: Rejecting Certain Non-ASCII Characters By: Jim Higgins on Fri, 19 April 2013 21:46
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Fri, 19 April 2013 22:00
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Fri, 19 April 2013 23:23
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Fri, 19 April 2013 17:38
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Fri, 19 April 2013 20:33
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Fri, 19 April 2013 21:08
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Fri, 19 April 2013 23:12
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Mon, 22 April 2013 11:25
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Mon, 22 April 2013 11:29
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Sat, 20 April 2013 12:08
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Sat, 20 April 2013 15:52
		Re: Rejecting Certain Non-ASCII Characters By: Jim Higgins on Fri, 19 April 2013 22:06
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Fri, 19 April 2013 22:26
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Fri, 19 April 2013 23:53
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Sat, 20 April 2013 00:36
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sat, 20 April 2013 00:58
		Re: Rejecting Certain Non-ASCII Characters By: Christoph Becker on Sat, 20 April 2013 01:34
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Fri, 19 April 2013 20:19
		Re: Rejecting Certain Non-ASCII Characters By: M. Strobel on Sat, 20 April 2013 08:04
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Sat, 20 April 2013 12:15
		Re: Rejecting Certain Non-ASCII Characters By: M. Strobel on Sat, 20 April 2013 12:26
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Sat, 20 April 2013 12:34
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Sat, 20 April 2013 12:41
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sat, 20 April 2013 12:43
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Sat, 20 April 2013 12:55
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sat, 20 April 2013 13:04
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Sat, 20 April 2013 19:29
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sun, 21 April 2013 00:03
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Sun, 21 April 2013 04:51
		Re: Rejecting Certain Non-ASCII Characters By: Arno Welzel on Sun, 21 April 2013 04:57
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sun, 21 April 2013 12:45
		Re: Rejecting Certain Non-ASCII Characters By: Tim Streater on Sun, 21 April 2013 14:09
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sun, 21 April 2013 14:29
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sun, 21 April 2013 12:44
		Re: Rejecting Certain Non-ASCII Characters By: The Natural Philosoph on Sat, 20 April 2013 14:07
		Re: Rejecting Certain Non-ASCII Characters By: Jerry Stuckle on Sun, 21 April 2013 00:06
		Re: Rejecting Certain Non-ASCII Characters By: M. Strobel on Sat, 20 April 2013 15:43
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Sat, 20 April 2013 16:01
		Re: Rejecting Certain Non-ASCII Characters By: M. Strobel on Sat, 20 April 2013 16:17
		Address munging (was: Rejecting Certain Non-ASCII Characters) By: Thomas 'PointedEars' on Sat, 20 April 2013 16:23
		OT: Address munging (was: Re: Rejecting Certain Non-ASCII Characters) By: Arno Welzel on Sat, 20 April 2013 19:25
		Re: Rejecting Certain Non-ASCII Characters By: Denis McMahon on Sat, 20 April 2013 22:06
		Re: Rejecting Certain Non-ASCII Characters By: Thomas 'PointedEars' on Mon, 22 April 2013 12:10

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