How to add an element to the middle of an associative array ?

I got an array that consists of elements that are arrays also. Now I
wish I could add an element to the middle of it. Let mi give you an
example:

array (
- array(1,15,apple),
- array(2,28,banana),
- array(3,41,orange)
}

I would like to add, let's say, carrot on 2nd position:

array (
- array(1,15,apple),
- array(2,57,carrot),
- array(3,28,banana),
- array(4,41,orange)
}

Sorry for that kind of presentation, but it's clear i think.

Array_splice() does not work (or maybe i use it in a wrong way? - it
splits an adding element for, in that case, 3 elements). Array_push()
adds only to the end of an array. can samobody tell me how to add and
element to the middle of an associative array?

I hope you can understand what i've written here :)

Thanx,
maciej

On 2 Oct 2004 10:46:37 -0700, forweb@poczta.fm (maciej) wrote:

>I got an array that consists of elements that are arrays also. Now I
>wish I could add an element to the middle of it. Let mi give you an
>example:
>
>array (
>- array(1,15,apple),
>- array(2,28,banana),
>- array(3,41,orange)
>}
>
>I would like to add, let's say, carrot on 2nd position:
>
>array (
>- array(1,15,apple),
>- array(2,57,carrot),
>- array(3,28,banana),
>- array(4,41,orange)
>}
>
>Sorry for that kind of presentation, but it's clear i think.
>
>Array_splice() does not work (or maybe i use it in a wrong way? - it
>splits an adding element for, in that case, 3 elements). Array_push()
>adds only to the end of an array. can samobody tell me how to add and
>element to the middle of an associative array?

Slightly confused because what you've posted isn't an associative array, it's
a "plain" array of arrays.

Could you post the output of var_dump(), print_r() or var_export() for your
before and after arrays? That'd make it clearer.

If they are as you post them, then array_splice() followed by a loop
incrementing the first element of the sub-array for the subsequent sub-arrays
would do it.

<pre>
<?php
$a = array (
array(1,15,'apple'),
array(2,28,'banana'),
array(3,41,'orange'),
);

var_export($a);
print "<hr>";

// note the extra array() - to insert a single element
// which itself is an array
array_splice($a, 1, 0, array(array(2,57,'carrot')));

for ($i=2; $i<count($a); $i++)
$a[$i][0]++;

var_export($a);

?>
</pre>


--
Andy Hassall / <andy@andyh.co.uk> / <http://www.andyh.co.uk>
<http://www.andyhsoftware.co.uk/space> Space: disk usage analysis tool

maciej wrote:
>
> I got an array that consists of elements that are arrays also. Now I
> wish I could add an element to the middle of it. Let mi give you an
> example:
>
> array (
> - array(1,15,apple),
> - array(2,28,banana),
> - array(3,41,orange)
> }
>
> I would like to add, let's say, carrot on 2nd position:
>
> array (
> - array(1,15,apple),
> - array(2,57,carrot),
> - array(3,28,banana),
> - array(4,41,orange)
> }
>
> Sorry for that kind of presentation, but it's clear i think.
>
> Array_splice() does not work (or maybe i use it in a wrong way? - it
> splits an adding element for, in that case, 3 elements). Array_push()
> adds only to the end of an array. can samobody tell me how to add and
> element to the middle of an associative array?

I think this should work, but I haven't tested:

array_splice ( $yourarray, 1, 0, array(array(2,57,carrot)));

Whatever you're inserting into the array has to be in an array itself.

Shawn
--
Shawn Wilson
shawn@glassgiant.com
http://www.glassgiant.com