| Inserting into associative array [message #169903] |
Wed, 29 September 2010 19:31  |
Jonathan Stein
Messages: 43
Registered: September 2010
Karma: 0
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Hi.
Let's say I have an array like
array(
'fruit' => 'banana',
'color' => 'yellow'
)
Now I want to insert
'shape' => 'round'
between 'fruit' and 'color'. I would think that PHP had a simple
solution for that, but I haven't found it... My solution is to loop
through the original array and build a new one.
Does anyone have a better solution?
Regards
Jonathan
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| Re: Inserting into associative array [message #169904 is a reply to message #169903] |
Wed, 29 September 2010 20:05  |
Michael Fesser
Messages: 215
Registered: September 2010
Karma: 0
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Senior Member |
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.oO(Jonathan Stein)
> Let's say I have an array like
> array(
> 'fruit' => 'banana',
> 'color' => 'yellow'
> )
>
> Now I want to insert
> 'shape' => 'round'
> between 'fruit' and 'color'. I would think that PHP had a simple
> solution for that, but I haven't found it... My solution is to loop
> through the original array and build a new one.
>
> Does anyone have a better solution?
Nope. But maybe you could explain why you need such a special order,
which can't be achieved with the given array sorting functions.
Micha
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| Re: Inserting into associative array [message #169905 is a reply to message #169903] |
Wed, 29 September 2010 21:07 |
Hamish Campbell
Messages: 15
Registered: September 2010
Karma: 0
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Junior Member |
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On Sep 30, 8:31 am, Jonathan Stein <jst...@image.dk> wrote:
> Hi.
>
> Let's say I have an array like
> array(
> 'fruit' => 'banana',
> 'color' => 'yellow'
> )
>
> Now I want to insert
> 'shape' => 'round'
> between 'fruit' and 'color'. I would think that PHP had a simple
> solution for that, but I haven't found it... My solution is to loop
> through the original array and build a new one.
>
> Does anyone have a better solution?
>
> Regards
>
> Jonathan
<?php
function array_insert(&$arr, $data, $pos) {
$array = array_slice($arr, 0, $pos) + $data +
array_slice($arr, $pos);
}
$a = array('a' => 'apple', 'b' => 'banana', 'o' => 'orange');
array_insert($a, array('p' => 'pear'), 2);
print_r($a);
// OUTPUT:
// Array ( [a] => apple [b] => banana [p] => pear [o] => orange )
?>
Regards
Hamish
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| Re: Inserting into associative array [message #169926 is a reply to message #169904] |
Thu, 30 September 2010 12:12 |
Jonathan Stein
Messages: 43
Registered: September 2010
Karma: 0
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Member |
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Den 29-09-2010 22:05, Michael Fesser skrev:
> Nope. But maybe you could explain why you need such a special order,
> which can't be achieved with the given array sorting functions.
In a Drupal module, I need to modify an array, that is later used to
build an input form - and the input fields will appear in the same order
as the elements in this associative array.
Regards
Jonathan
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| Re: Inserting into associative array [message #169928 is a reply to message #169905] |
Thu, 30 September 2010 12:17 |
Jonathan Stein
Messages: 43
Registered: September 2010
Karma: 0
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Member |
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Den 29-09-2010 23:07, Hamish Campbell skrev:
> function array_insert(&$arr, $data, $pos) {
Thank you for your suggestion. If the number of elements is fixed, it's
a bit more elegant than looping through the array.
Regards
Jonathan
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| Re: Inserting into associative array [message #169995 is a reply to message #169903] |
Mon, 04 October 2010 03:25 |
Peter H. Coffin
Messages: 245
Registered: September 2010
Karma: 0
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Senior Member |
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On Wed, 29 Sep 2010 21:31:54 +0200, Jonathan Stein wrote:
> Hi.
>
> Let's say I have an array like
> array(
> 'fruit' => 'banana',
> 'color' => 'yellow'
> )
>
> Now I want to insert
> 'shape' => 'round'
> between 'fruit' and 'color'. I would think that PHP had a simple
> solution for that, but I haven't found it... My solution is to loop
> through the original array and build a new one.
>
> Does anyone have a better solution?
Why do you care where it is? It's an associative array. You access it by
keys.
--
"Meet it is I set it down
That one may smile, and smile, and be a villain"
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| Re: Inserting into associative array [message #169996 is a reply to message #169926] |
Mon, 04 October 2010 03:25 |
Peter H. Coffin
Messages: 245
Registered: September 2010
Karma: 0
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Senior Member |
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On Thu, 30 Sep 2010 14:12:48 +0200, Jonathan Stein wrote:
> Den 29-09-2010 22:05, Michael Fesser skrev:
>
>> Nope. But maybe you could explain why you need such a special order,
>> which can't be achieved with the given array sorting functions.
>
> In a Drupal module, I need to modify an array, that is later used to
> build an input form - and the input fields will appear in the same order
> as the elements in this associative array.
Ah. If you can arrange your keys to be sortable, you might find ksort()
handy. If you want them in an arbitrary order, you're going be doing a
lot more work...
--
The Write Many, Read Never drive. For those people that don't know
their system has a /dev/null already.
-- Rik Steenwinkel, singing the praises of 8mm Exabytes
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