combine multidimentional associative arrays with matching key value pair - php

Question

[traffic] => Array
(
[0] => Array
(
[id] => 1
[visitors] => 310
[pageviews] => 1333
[created_date] => 2016-03-09
)
[1] => Array
(
[id] => 2
[visitors] => 374
[pageviews] => 1010
[created_date] => 2016-03-10
)
[2] => Array
(
[id] => 3
[visitors] => 143
[pageviews] => 617
[created_date] => 2016-03-11
)
)
[source] => Array
(
[0] => Array
(
[created_date] => 2016-03-09
[scount] => 368
)
[1] => Array
(
[created_date] => 2016-03-10
[scount] => 550
)
[2] => Array
(
[created_date] => 2016-03-11
[scount] => 238
)
)
I have two multidimensional arrays, I want to combine both arrays into one with matching created_date value, the result should be like this,
Array
(
[0] => Array
(
[created_date] => 2016-03-09
[id] => 1
[visitors] => 310
[pageviews] => 1333
[scount] => 368
)
[1] => Array
(
[created_date] => 2016-03-10
[id] => 2
[visitors] => 374
[pageviews] => 1010
[scount] => 550
)
[2] => Array
(
[created_date] => 2016-03-11
[id] => 3
[visitors] => 143
[pageviews] => 617
[scount] => 238
)
)

Answer 1

$traffic = []; //...
$source = []; // ...
foreach($traffic as $key => $value)
{
if(isset($source[$key]))
{
$token = $source[$key];
foreach($token as $keyy => $valuee)
{
if(isset($traffic[$key][$keyy]))
{
// Collision handling, if any ...
$traffic[$key][$keyy] = $valuee;
}
else $traffic[$key][$keyy] = $valuee;
}
}
}

Answer 2

The following code should do the trick.
The solution:
# I split your array into 2 parts ($traffic = $your_array['traffic'])
$traffic = array(
array(
id => 1,
visitors => 310,
pageviews => 1333,
created_date => '2016-03-09'
),
array(
id => 2,
visitors => 374,
pageviews => 1010,
created_date => '2016-03-10'
),
array(
id => 3,
visitors => 143,
pageviews => 617,
created_date => '2016-03-11'
)
);
# I split your array into 2 parts ($source = $your_array['source'])
$source = array(
array (
created_date => '2016-03-09',
scount => 368
),
array (
created_date => '2016-03-10',
scount => 550
),
array (
created_date => '2016-03-11',
scount => 238
)
);
# copy the traffic array cause we want to merge the new data into it
$result = $traffic;
# loop over the traffic array
foreach ($traffic as $k => $t) {
# loop over the source
foreach ($source as $s) {
# try to find a match
if ($t['created_date'] === $s['created_date']) {
# add data to result
$result[$k]['scount'] = $s['scount'];
# we exit the inner foreach-loop here as there is only 1 match
break;
}
}
}
# print the result
echo '<pre>'; print_r($result); echo '</pre>';
The result:
Array
(
[0] => Array
(
[id] => 1
[visitors] => 310
[pageviews] => 1333
[created_date] => 2016-03-09
[scount] => 368
)
[1] => Array
(
[id] => 2
[visitors] => 374
[pageviews] => 1010
[created_date] => 2016-03-10
[scount] => 550
)
[2] => Array
(
[id] => 3
[visitors] => 143
[pageviews] => 617
[created_date] => 2016-03-11
[scount] => 238
)
)
you can test it here: http://www.writephponline.com

Answer 3

Here is your solution:-
$arr1 = $arr1['traffic']; // assign key traffic record to array1
$arr2 = $arr2['source']; // assign key source record to array2
$result = [];
foreach($arr1 as $key=>$value){
$result[$key] = $value;
// find created_date in second array
$keyOfSecondArr = array_search($value['created_date'], array_column($arr2, 'created_date'));
$result[$key]['scount'] = $arr2[$keyOfSecondArr]['scount'];
}
echo '<pre>'; print_r($result);
output:-
Array
(
[0] => Array
(
[id] => 1
[visitors] => 310
[pageviews] => 1333
[created_date] => 2016-03-09
[scount] => 368
)
[1] => Array
(
[id] => 2
[visitors] => 374
[pageviews] => 1010
[created_date] => 2016-03-10
[scount] => 550
)
[2] => Array
(
[id] => 3
[visitors] => 143
[pageviews] => 617
[created_date] => 2016-03-11
[scount] => 238
)
)