Re: array conversion

On 19 February 2010 07:26, Adam Richardson <simpleshot@gmail.com> wrote: > Or, > > function new_arr(array $arr) > { >    $count = count($arr); >    if ($count % 2 != 0) throw new Exception('The new_arr() function > requires an even number of elements.'); >    for ($i = 0; $i < $count; $i += 2) >    { >        $new_arr[$arr[$i]] = $arr[$i + 1]; >    } >    return $new_arr; > } > > $test = new_arr(array('k1', 'v1', 'k2', 'v2', > 'k3', 'v3')); > > exit(var_dump($test)); > > On Fri, Feb 19, 2010 at 1:19 AM, Larry Garfield <larry@garfieldtech.com>wrote: > >> On Thursday 18 February 2010 11:58:28 pm Paul M Foster wrote: >> > On Fri, Feb 19, 2010 at 01:20:12PM +0800, Dasn wrote: >> > > Hi guys. How to convert an array like: >> > > >> > > Array >> > > ( >> > >     [0] => key1 >> > >     [1] => value1 >> > >     [2] => key2 >> > >     [3] => value2 >> > > ) >> > > >> > > to >> > > >> > > >> > > Array >> > > ( >> > >     [key1] => value1 >> > >     [key2] => value2 >> > > ) >> > > >> > > Is there a built-in function to do this? >> > > Please Cc me. :) >> > > Thank you in advance. >> > >> > I don't believe so, but rolling your own should not be too hard: >> > >> > $a = array($key1, $value1, $key2, $value2); >> > $b = array(); >> > $numitems = count($a); >> > >> > for ($i = 0; $i < $numitems; $i++) { >> >       if ($i % 2 == 0) { >> >               $saved_key = $a[$i]; >> >       } >> >       elseif ($i % 2 == 1) { >> >               $b[$saved_key] = $a[$i]; >> >       } >> > } >> > >> > Code is crude and untested, but you get the idea. >> > >> > Paul >> >> This would be even shorter, I think: >> >> foreach ($items as $i => $value) { >>  $temp[$i % 2][] = $value; >> } >> $done = array_combine($temp[0], $temp[1]); >> >> (Also untested, just off the cuff...) >> >> --Larry Garfield >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > I'd say that this cat is well and truly skinned! > > -- > Nephtali:  PHP web framework that functions beautifully > http://nephtaliproject.com > -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling