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Re: Rejecting Certain Non-ASCII Characters [message #181155 is a reply to message #181149]

Fri, 19 April 2013 17:38

Christoph Becker
Messages: 91
Registered: June 2012

Karma:

Member

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 it really a slashed zero (U+0030 U+0338) they're entering, or do they
enter some similar looking character such as the Danish Ø? In the
former case you can simply replace the slashed zero with a standard
zero. Assuming UTF-8 encoding:

$input = str_replace('\xCC\xB8', '', $input);

> 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?

If you're dealing with a numeric column, you may consider checking for
is_numeric().

--
Christoph M. Becker

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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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