how do i add values from one array to another.

[needsomehelp]

I will have two arrays like so...

$tempCounters = array( 'userid' => '', array( 'itemOwnerCommentCount' => 0, 'notItemOwnerCommentCount' => 0 ) );

and the main one being...

$mainCounters = array( 'userid' => '', array( 'itemOwnerCommentCount' => 0, 'notItemOwnerCommentCount' => 0 ) );

I am wanting to add the value in the temp array to the main array for each of the two parts of the array being the `itemOwnerCommentCount` and `notItemOwnerCommentCount`

so if the temp has

userid				1	2	3
itemOwnerCommentCount		2	1	0
notItemOwnerCommentCount	4	1	2

and the main array has
userid				1	2	3
itemOwnerCommentCount		8	5	1
notItemOwnerCommentCount	2	4	1

then the main array will end up with
userid				1	2	3
itemOwnerCommentCount		10	6	1
notItemOwnerCommentCount	6	5	3

How would I add these values correctly ?



I have tried...

foreach($tempCounter as $ui => $value) {
echo("<br>" . $ui . ":<br>:" . $value[$ui] . ":<br><br>");
$mainCounters[$ui][0] = $mainCounters[$ui][0] + $tempCounters[$ui][0];
$mainCounters[$ui][1] = $mainCounters[$ui][1] + $tempCounters[$ui][1];
}

But think there ay be something wrong with the code that gets the values in the first place that could be causing the array to seem empty. or maybe I have this array sum thing wrong ?

[Fumigator]

Can you show me what your array structure looks like from PHP's point of view-- that is to say, run this code:

PHP Code:

echo "<pre>".print_r($mainCounters,true)."</pre>"; 


And paste the output here. Because, according to how you've described your array, it doesn't make any sense. The "userid" index is unrelated to the counters. So I just want to see exactly what your array looks like before I evaluate the foreach() loop you are using.

[Inigoesdr]

It would be a lot more efficient to use the userid as the key for the array, but based on the example array you gave, here is how you could do it:

PHP Code:

<?php

$tmp = array(    
                array(    
                        'userid' => 1
                        ,array(
                            'itemOwnerCommentCount' => 2
                            ,'notItemOwnerCommentCount' => 4
                        )
                )
                ,array(    
                        'userid' => 2
                        ,array(
                            'itemOwnerCommentCount' => 1
                            ,'notItemOwnerCommentCount' => 1
                        )
                )
                ,array(    
                        'userid' => 3
                        ,array(
                            'itemOwnerCommentCount' => 0
                            ,'notItemOwnerCommentCount' => 2
                        )
                )
             );

$main = array(    
                array(    
                        'userid' => 1
                        ,array(
                            'itemOwnerCommentCount' => 8
                            ,'notItemOwnerCommentCount' => 2
                        )
                )
                ,array(    
                        'userid' => 2
                        ,array(
                            'itemOwnerCommentCount' => 5
                            ,'notItemOwnerCommentCount' => 4
                        )
                )
                ,array(    
                        'userid' => 3
                        ,array(
                            'itemOwnerCommentCount' => 1
                            ,'notItemOwnerCommentCount' => 1
                        )
                )
             );


foreach( $main as $k => $v )
{
    foreach( $tmp as $j => $w )
    {
        if( isset( $tmp[$j]['userid'] ) && $tmp[$j]['userid'] == $main[$k]['userid'] )
        {
            
            if( isset( $tmp[$j][0]['itemOwnerCommentCount'] ) )
                $main[$k][0]['itemOwnerCommentCount'] += $tmp[$j][0]['itemOwnerCommentCount'];
            
            if( isset( $tmp[$j][0]['notItemOwnerCommentCount'] ) )
                $main[$k][0]['notItemOwnerCommentCount'] += $tmp[$j][0]['notItemOwnerCommentCount'];
            
            break;
        }
    }
    
}

var_export( $main ); // outputs :
/*

array (
     0 =>      array ( 
                     'userid' => 1,
                     0 => array (
                         'itemOwnerCommentCount' => 10,
                         'notItemOwnerCommentCount' => 6,
                     ),
                 ),
     1 =>     array (
                     'userid' => 2,
                     0 =>  array (
                         'itemOwnerCommentCount' => 6,
                         'notItemOwnerCommentCount' => 5,
                     ),
                 ),
     2 =>      array (
                     'userid' => 3,
                     0 =>  array (
                         'itemOwnerCommentCount' => 1,
                         'notItemOwnerCommentCount' => 3,
                 ),
     ),
)

*/

[Fumigator]

Decent solution but you had to alter needsomehelp's array structure to get there.

[needsomehelp]

it turns out that i had a few bugs in the code that was placing values in the array in the first place, causing the arrays not to be added together, also a had in my OP a typo, i have iu instead of ui. seems to be working now.

Thank you anyway for your help on this.