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

[maciej]

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,appl e),
- array(2,28,bana na),
- array(3,41,oran ge)
}

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

array (
- array(1,15,appl e),
- array(2,57,carr ot),
- array(3,28,bana na),
- array(4,41,oran ge)
}

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

[Andy Hassall]

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

On 2 Oct 2004 10:46:37 -0700, forweb@poczta.f m (maciej) wrote:
[color=blue]
>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,appl e),
>- array(2,28,bana na),
>- array(3,41,oran ge)
>}
>
>I would like to add, let's say, carrot on 2nd position:
>
>array (
>- array(1,15,appl e),
>- array(2,57,carr ot),
>- array(3,28,bana na),
>- array(4,41,oran ge)
>}
>
>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?[/color]

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,'app le'),
array(2,28,'ban ana'),
array(3,41,'ora nge'),
);

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(2,5 7,'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.andyhsoftwa re.co.uk/space> Space: disk usage analysis tool

[Shawn Wilson]

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

maciej wrote:[color=blue]
>
> 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,appl e),
> - array(2,28,bana na),
> - array(3,41,oran ge)
> }
>
> I would like to add, let's say, carrot on 2nd position:
>
> array (
> - array(1,15,appl e),
> - array(2,57,carr ot),
> - array(3,28,bana na),
> - array(4,41,oran ge)
> }
>
> 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?[/color]

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

array_splice ( $yourarray, 1, 0, array(array(2,5 7,carrot)));

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

Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com