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Posted by McHenry on 10/10/34 11:51
"Rik" <luiheidsgoeroe@hotmail.com> wrote in message
news:d3c89$44a10ae8$8259c69c$25584@news1.tudelft.nl...
> McHenry wrote:
>> "Rik" <luiheidsgoeroe@hotmail.com> wrote in message
>> news:ab90a$449fde69$8259c69c$10096@news1.tudelft.nl...
>>> McHenry wrote:
>>>> Why could we not simply have used as this is what I tried and it
>>>> didn't work ?
>>>> <h3>.*?(?P<field2>[0-9\.,]*).*?</h3>
>>>
>>> 1. It matches a single dot or comma, not desired.
>>> 2. It matches 'nothing' (* = 0 or more)
>>>
>>> In <h3>.*?(?P<field2>[0-9]+[0-9\.,]*).*?</h3>, we use [0-9]+ to say:
>>> once you have found at least 1 number, and maybe more, capture all
>>> numbers, comma's and dot's.
>>
>> Thanks Rik, I understand the difference... wow are these things
>> normally easy to follow or always this heard ?
>
> YOu'll just have to get used to it, the more you use them, the easier they
> become. One reason I normally reply to regex questions is to sharpen my
> skills :-).
>
>> I have a regex, that performs three captures of three prices, it
>> works when all three are present and numeric however if one is
>> missing or listed as POA or similar then all three fail. Can this be
>> overcome or do I need three seperate preg_match statements ?
>>
>> Thanks in advance...
>
> With listed as 'POA' you mean it literally?
> If you're using the simple one:
>
> <h3>.*?(?:(?P<prices>(?:[0-9]+[0-9\.,]*)|POA).*?){1,3}</h3>
>
> Grtz,
> --
> Rik Wasmus
>
>
Rik, thanks as always. POA was simply an example it could be anything.
What I meant was if the one regex performs three caputres in the one
statement and one fails must all three fail or can the other two still
capture ?
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