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Re: regexp [message #173507 is a reply to message #173496]

Sat, 16 April 2011 08:08

Luuk
Messages: 329
Registered: September 2010

Karma:

Senior Member

On 15-04-2011 23:21, Michael Fesser wrote:
> .oO(smerf)
>
>> ["regexp"]=>
>> string(93) "^/(?Particles|admin/comments|blog)(/(?P[^/]+?)?(/(?P[^/]+?)?)?)?(/)?$"
>>
>> What is making "?P" above ?
>
> Usually ?P is used to give a name to a subpattern, e.g.
>
> (?P<foo>.*)
>
> This match can then be accessed by the name 'foo' in the result set. But
> in the above example there are no names given, so I'm not sure what the
> ?Ps are supposed to do there.
>
> Micha

hm i learned something today ;)
http://www.php.net/manual/en/regexp.reference.subpatterns.php

"It is possible to name a subpattern using the syntax (?P<name>pattern).
This subpattern will then be indexed in the matches array by its normal
numeric position and also by name. PHP 5.2.2 introduced two alternative
syntaxes (?<name>pattern) and (?'name'pattern)."

Too bad that some simple example are missing for this 'complex'stuff.... ;)

--
Luuk

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[Message index]

		regexp By: smerf on Fri, 15 April 2011 19:51
		Re: regexp By: Luuk on Fri, 15 April 2011 19:59
		Re: regexp By: Michael Fesser on Fri, 15 April 2011 21:21
		Re: regexp By: Luuk on Sat, 16 April 2011 08:08

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