| Re: Zip Codes ctype? Pregmatch? [message #182650 is a reply to message #182649] |
Wed, 21 August 2013 13:06   |
Thomas 'PointedEars'
Messages: 701
Registered: October 2010
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Thomas 'PointedEars' Lahn wrote:
> Thomas 'PointedEars' Lahn wrote:
>> Norman Peelman wrote:
>>> On 08/20/2013 01:27 PM, Twayne wrote:
>>>> I'm attempting to check for US and Canadian zip codes (postal codes).
>>>> The US is easy; mostly just be sure it's five numerics and except
>>>> "00000" and "99999". […]
>>>
>>> US Zip code:
>>> [0-9]{5}(-{0,1}[0-9]{4}){0,1}
>> ^^^^^ ^^^^^^^^^^ ^^^^^
>> […]
>> However, the specification above says that “00000” and “99999” are _not_
>> valid U.S. ZIP codes, so to be exact you cannot just use either
>> “[0-9]{5}” or “\d{5}”; but you would have to use, for example, a
>> zero-width negative lookahead:
>>
>> $possibleZips = array('00000', '00001', '99998', '99999');
$possibleZips = array('00000', '00001', '99998', '90909', '99999');
>> foreach ($possibleZips as $possibleZip)
>> {
>> preg_match('^(?![09]{5})\\d{5}(?:-?\\d{4})?$', $possibleZip,
>
> Replace this line with
>
> preg_match('/^(?![09]{5})\\d{5}(?:-?\\d{4})?$/', $possibleZip,
>
> (add the delimiter).
Which is still not correct, because '/[09]{5}/' matches "90909", which is
thus designated not valid. ISTM that alternation is required here:
preg_match('/^(?!0{5}|9{5})\\d{5}(?:-?\\d{4})?$/', $possibleZip);
PointedEars
--
var bugRiddenCrashPronePieceOfJunk = (
navigator.userAgent.indexOf('MSIE 5') != -1
&& navigator.userAgent.indexOf('Mac') != -1
) // Plone, register_function.js:16
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