Merging values in array of objects depending on matching values

Question

I currently have an array in this format:

[
    {
        "name": "Size",
        "values": [
            "Small"
        ]
     },
     {
        "name": "Colour",
        "values": [
            "Red"
        ]
     },
     {
        "name": "Size",
        "values": [
            "Large"
        ]
     },
     {
         "name": "Colour",
         "values": [
              "Green"
          ]
      } 
]

I wish to loop through the array and as a result have its structure looking like this:

[
    {
        "name": "Size",
        "values": [
            "Small", "Large"
         ]
    },
    {
         "name": "Colour",
         "values": [
             "Red", "Green"
          ] 
     }

I wish for it to merge the "values" if the "names" match.

do you wants to check the values of both arrays and if they match and then to b e matches — Nipun Tharuksha
– Nipun Tharuksha, Commented Jul 18, 2019 at 15:58
@NipunTharuksha - For example, if there are two objects with the same "name" the "values" should be merged and the name kept. — Aontaigh
– Aontaigh, Commented Jul 18, 2019 at 16:06

Rajkumar R · Accepted Answer · 2019-07-18 16:39:45Z

1

I've done some changes in your data to get the output and it might solve your problem.

<?php
$val = json_decode('[
{
    "name": "Size",
    "values": [
        "Small"
    ]
},
{
    "name": "Colour",
    "values": [
        "Red"
    ]
},
{
    "name": "Size",
    "values": [
        "Large"
    ]
},
{
    "name": "Colour",
    "values": [
        "Green"
    ]
}
]');
$output =[];
foreach($val as $v) {
    if(!isset($output[$v->name])) {
        $output[$v->name]["name"] = $v->name;
        $output[$v->name]["values"] = $v->values;
    } else {
        $output[$v->name]["values"] = array_merge($v->values,$output[$v->name]["values"]);
    }
}
$output = array_values($output);
print_r(json_encode($output));
?>

edited Jul 18, 2019 at 16:39

answered Jul 18, 2019 at 16:33

Rajkumar R

1,0798 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

MH2K9 · Accepted Answer · 2019-07-18 16:42:20Z

0

Simply array_reduce() might be a solution for your purpose.

$result = array_values(array_reduce($data, function ($old, $new) {
    $old[$new->name] = $new;
    return $old;
}, []));

Demo

answered Jul 18, 2019 at 16:42

MH2K9

12.1k7 gold badges34 silver badges49 bronze badges

Comments

Dario Marchitelli · Accepted Answer · 2019-07-18 16:46:05Z

This my code, I first created this array in php and then used some foreach to solve the problem, this is the result

<?php
    //creating source vector
    $source=array();
    array_push($source,["name"=>"Size","values"=> ["Small"]]);
    array_push($source,["name"=>"Colour","values"=> ["Red"]]);
    array_push($source,["name"=>"Size","values"=> ["Large"]]);
    array_push($source,["name"=>"Colour","values"=> ["Green"]]);
    print_r($source);
    //initializind the result vector
    $result=array();
    array_push($result,["name"=>"Size", "values" => []]);
    array_push($result,["name"=>"Colour", "values" => []]);
    $i=0;

    //starting sorting
    foreach($source as $element){
        if($element['name']==="Size"){
            foreach($element["values"] as $subelement){
                array_push($result[0]["values"],$source[$i]["values"][0]);
            }
        }
        else{
            foreach($element["values"] as $subelement){
                array_push($result[1]["values"],$source[$i]["values"][0]);
            }
        }
        $i++;
    }


    //output
    print_r($source);
    print("<br><br>");
    print_r($result);
?>

And this the final output

    Array ( 
          [0] => Array ( 
                      [name] => Size 
                      [values] => Array ( 
                                [0] => Small
                                [1] => Large ) ) 
          [1] => Array ( 
                      [name] => Colour 
                      [values] => Array (
                                [0] => Red 
                                [1] => Green ) )  
)

Hope it helps!

Caconde · Accepted Answer · 2019-07-18 17:38:46Z

0

Try this:

$newArray = [];
foreach($sourceArray as $element) {
    $newArray[$element->name]['name'] = $element->name;
    $newArray[$element->name]['values'][] = implode($element->values);
}
$newArray = array_values($newArray);

answered Jul 18, 2019 at 17:38

Caconde

4,5237 gold badges39 silver badges34 bronze badges

Collectives™ on Stack Overflow

Merging values in array of objects depending on matching values

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related