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Posted by Steve Turnbull on 09/08/05 18:51
On Thu, 08 Sep 2005 16:36:36 +0100, Steve Turnbull wrote:
> On Thu, 08 Sep 2005 09:15:03 +0100, Steve Turnbull wrote:
>
>> On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote:
>>
>>> Steve Turnbull wrote:
>>>> I am trying to find a regular expression to match a variable, what I think
>>>> should work (but doesn't) is;
>>>>
>>>> preg_match ('^/[\w],[\w],/', $variable)
>>>>
>>>> The $variable MUST contain an alpha-numeric string, followed by a comma,
>>>> followed by another alpha-numeric string, followed by another comma
>>>> followed by (but doesn't have to!!) another alpha-numeric string followed
>>>> by nothing.
>>>>
>>>> I realise my regex above doesn't allow for the last 'followed by nothing',
>>>> but to me it looks like it should match the first part of the string up to
>>>> the last comma?
>>>
>>> Something like
>>>
>>> '/^\w+,\w+,\w*$/'
>>>
>>> maybe? (untested)
>>>
>>> http://php.net/reference.pcre.pattern.syntax
>>
>> Thats got me a lot further - thanks
>>
>> I reduced it slightly to '/^\w+,\w+,' because at the end there is the
>> possibility of an alpha-numeric character(s) OR nothing at all with the
>> exception of a possible line break (note possible)
>>
>> It's the 'possibly nothing at all' which I am slightly stuck on
>>
>> Thanks
>> Steve
>
>
> One more thing (I have tried researching myself and reading the o'rielly
> book, but I need fairly swift solutions)...
>
> How would I check for this scenario;
>
> Two commas, which MAY have, but don't always have a value between, but
> the commas must ALWAYS be there - i.e.
>
> var1,var2,var3
> var1,var2,
> var1,,
>
No matter now - sorted. I hadn't read the final reply before I posted this
one
Thanks again
Steve
> Cheers
> Steve
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