simple array manipulation

[AudiS2]

Let say I have an example array('color'=>'green', 'size'=>'big')

 

How can I insert 'weight'=>'heavy' at the beginning of array?

 

array_unshift would not accept 'weight'=>'heavy' as a parametar.

 

 

[papaface]

something like

<?php
$array1 = array('color'=>'green', 'size'=>'big');
$array2 = array("weight"=>"heavy");
$result = array_merge($array2, $array1);
print_r($result);
?>

[AudiS2]

Sorry I see now that my actual question was how to insert value between 'color' and 'size'

 

so that at the end I have

array('color'=>'green', "weight"=>"heavy", 'size'=>'big')

[papaface]

what difference does it make where it is located?

Why do you require it in such a precise location within the array?

[.josh]

One thing I can think of is it would mean the difference between having to manually echo out things in a specific order and just looping.  Anyways, here's my take:

 

<?php
$array1 = array('color'=>'green', 'size'=>'big');

foreach ($array1 as $key => $val) {
   if ($key == 'size') {
    $newarray['weight'] = 'heavy';
   }
   $newarray[$key] = $val;
}
print_r($newarray);
?>

 

'weight' => 'heavy' is hardcoded into the condition because I don't really know where that's coming from. You'll have to insert your own var there.

[AudiS2]

Thanks Crayon . Copying seems to be only way.

 

There is no function in PHP that says insert an element to an array at that position.

[.josh]

Nope, apparently not.  Seems kind of odd that there doesn't seem to be a built-in array_insert function to insert a key=>value or even just value into a specific position of an array, like after or before a specified element.  I figured out a bunch of alternate methods to achieve the same thing, using various other array manipulation functions, but overall, ^^ seemed to be the quickest and simplest method, imo.