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In-Reply-To: <cda548cc1003170900i249efd0cmb74f7599ce2ebb5b@mail.gmail.com>
Date: Wed, 17 Mar 2010 17:13:24 +0100
Cc: PHP internals <internals@lists.php.net>
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References: <6E76B52E-7543-4F09-A948-A7910513B548@gmail.com> <cda548cc1003170900i249efd0cmb74f7599ce2ebb5b@mail.gmail.com>
To: Patrick ALLAERT <patrick.allaert@gmail.com>
Subject: Re: [PHP-DEV] array_seek function
From: felix.devliegher@gmail.com (Felix De Vliegher)

On 17-mrt-2010, at 17:00, Patrick ALLAERT wrote:

> 2010/3/16 Felix De Vliegher <felix.devliegher@gmail.com>:
>> Hi all
>>=20
>> I recently needed seek functionality in arrays, and couldn't find it =
in the regular set of array functions, so I wrote a function for it. =
(Seek =3D getting an array value based on the position (or offset, if =
you want to call it like that), and not the key of the item)
>>=20
>> Basically you can use it like this:
>> $input =3D array(3, 'bar', 'baz');
>> echo array_seek($input, 2); // returns 'baz'
>> echo array_seek($input, 0); // returns 3
>> echo array_seek($input, 5); // returns NULL, emits an out of range =
warning
>>=20
>> I was wondering if it's useful to add this to the family of array =
functions. I know there is a somewhat similar thing in SPL =
(ArrayIterator::seek), but that doesn't work exactly like what I was =
aiming for.
>>=20
>> Attached is a patch for the function against the 5.3 branch. If =
approved, I could add it to svn + testcases + docs. Feedback please :-)
>>=20
>>=20
>> Kind regards,
>> Felix
>=20
> Hi Felix,
>=20
> What about adding a new int parameter to PHP array function: next()
> and prev() instead of adding a new one?


Hi Patrick

That's of course possible, but that would only allow seeking to a =
relative position to where the array pointer is at that moment. The =
functionality also gets a bit ambiguous by adding an optional parameter. =
You're not going to the next or prev position of the array anymore.

And I think functions like next, prev, current etc should be kept easy =
to use. If you want seek-like functionality, use the designated array =
function for that (if this one should make it into php, that is).

Cheers,
Felix=