note 82871 added to function.array-merge
| From: | ian at fuzzygroove dot com | Date: | Tue, 29 Apr 2008 23:51:43 +0000 |
| Subject: | note 82871 added to function.array-merge | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-138922@lists.php.net to get a copy of this message | ||
I needed a function to interlace two arrays ([a,b,c] + [d,e,f] = [a,d,b,e,c,f]) and came up with the
following. This function works for arrays of varying lengths and keeps the keys sequenced properly.
<?php
$a = array ('a', 'b', 'c');
$b = array ('d', 'e', 'f', 'g', 'h',
'i');
$c = array_interlace ($a, $b);
/*
Array
(
[0] => a
[1] => d
[2] => b
[3] => e
[4] => c
[5] => f
[6] => g
[7] => h
[8] => i
)
*/
function array_interlace ($a, $b)
{
$c = array();
$shorty = (count($a) > count($b)) ? $b : $a;
$biggy = (count($a) > count($b)) ? $a : $b;
$slen = count($shorty);
$blen = count($biggy);
for ($i = 0; $i < $slen; ++$i){
$c[$i * 2] = $a[$i];
$c[$i * 2 + 1] = $b[$i];
}
for ($i = $slen; $i < $blen; ++$i)
{
$c[] = $biggy[$i];
}
return $c;
}
?>
----
Server IP: 69.147.83.197
Probable Submitter: 74.1.189.48
----
Manual Page -- http://www.php.net/manual/en/function.array-merge.php
Edit -- https://master.php.net/note/edit/82871
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