Re: PHP script for detecting pattern sequences?
| From: | Per Jessen | Date: | Wed, 08 Jul 2009 22:00:17 +0000 |
| Subject: | Re: PHP script for detecting pattern sequences? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-295050@lists.php.net to get a copy of this message | ||
Rob Gould wrote:
> Can anyone tell me if there's a PHP library out there that will help
> me determine "pattern sequences" from a string?
>
>
> Example input:
>
> 032258064516129032258064516129032258064516129032258064516129
> Sequence = 032258064516129
>
>
> 037037037037037037037037037037037037037037037037037037037037
> Sequence = 037
>
>
> I know regex can help you find a pattern when you know what the
> pattern is already, but this is different.
Nah, it's the same thing.
A suitable regex might look something like this:
/([0-9]+)\1+/
Not tested, probably won't work on the first try. You may need
greediness adjustments.
/Per
--
Per Jessen, Zürich (14.1°C)