Adding elements in arrays

[ligraci]

Hi!!

Is it possible to add elements in an array changing also the key numbers?

For example, my array is:

$array=array(0 => apple, 1 => banana, 2 => orange);

I want

$array=array(0 => apple, 1 => lemon, 2 => banana, 3 => orange);

How can I add the element in that position without overwriting the previous?

Thanks
GG

[bubblenut]

I call it the half-reverse-bubble-judo-chop, it's basically half a bubblesort, turned upside down so that the value bubbles down from the end of the array to where you want it.

function bubbledown(&$array,$value,$place)
{
  for($i=count($array);$i>$place; $i--)
    $array[$i]=$array[$i-1];
  $array[$i]=$value;
}
#Then use it like
$array=array(0=>'apple',1=>'banana',2=>'orange');
bubbledown($array,'lemon',1);
print_r($array);

HTH
Bubble

[ligraci]

Thanks!

I've found this function too:

$array= array("red", "green", "blue", "yellow");
$key=2;
array_splice($array, $key, 0, "white");
// returns array("red", "green", "white", "blue", "yellow");

^_
GG

[bubblenut]

That's second time that's happened, me going ahead and writing a function before thoroughly checking the manual. :rolleyes: Oh well, at least my way incorperates my handle :p
Bubble
[edit]
I remember now (read: I just went checked the code I wrote that for 😉) it was originally designed for bubbling down on value rather than on key. Say if you wanted your array of fruit to be ordered alphabetically and they're all being pulled from the database, you know you're going to have to effectively loop through the array at least once (when you fill it up with $row=mysql_fetch_row($res) or whatever) so you may as well order the array as you go along rather than doing a full sort at the end.
[/edit]