Merging arrays like this - help!

[phplemon]

Array ( [5] => first [3] => first [2] => second [4] => second )

Hi, I need to merge this array so it becomes this:

Array ( [8] => first [6] => second )

So it adds 5 + 3 from the ones with value first. I have tried everything but cant find a solution.

 

How can I do it?

 

thx

[Barand]

You can't.

 

Array key values must be unique and you cannot guarantee that when you start adding them. You need to to rethink your array structure

[Ch0cu3r]

You could do

$array = array(5 => 'first', 3 => 'first', 2 => 'secound', 4 => 'secound');

$array_values = array_unique(array_values($array));

printf('<pre>%s</pre>', print_r($array_values, true));

foreach($array_values as $value)
{
    echo $value .' = ' . array_sum(array_keys($array, $value)) . '<br />';
}

Edited October 15, 2013 by Ch0cu3r

[phplemon]

You can't.

 

Array key values must be unique and you cannot guarantee that when you start adding them. You need to to rethink your array structure

Ok, can I make it so that it adds 5 + 3 + an extra 100 to make sure its unique? So the array becomes like this:

Array ( [108] => first [106] => second )

[phplemon]

 

You could do

$array = array(5 => 'first', 3 => 'first', 2 => 'secound', 4 => 'secound');

$array_values = array_unique(array_values($array));

printf('<pre>%s</pre>', print_r($array_values, true));

foreach($array_values as $value)
{
    echo $value .' = ' . array_sum(array_keys($array, $value)) . '<br />';
}

Thank you, in the end it gives me this:

Array
(
    [0] => first
    [2] => secound
)
first = 8
secound = 6

Im going to merge the array with another array so this doesnt really work for me.

Maybe I can use this as an array inside another array and still get the result I want.

 

Thx.

[Barand]

if you started with this array you have a problem, even if you add 100

$array = array(1 => 'second', 3 => 'first', 2 => 'first', 4 => 'second');

[AbraCadaver]

Maybe a description of what you want to do or overall end result instead of the end result of the array

Edited October 15, 2013 by AbraCadaver