Sorting assoc array by duplicate value on assoc array

Question

I would like to sort an array by duplicate value of a specific key : I dont want to remove duplicate item but i just need to sort my array by duplicate

for exemple i have this array :

$data = array(
    array(
        "id" => 1,
        "name" => "Bruce Wayne",
        "city" => "Gotham",
        "gender" => "Male"
    ),
    array(
        "id" => 2,
        "name" => "Diana Prince",
        "city" => "Gotham",
        "gender" => "Male"
    ),
    array(
        "id" => 4,
        "name" => "Speedy Gonzales",
        "city" => "New Mexico",
        "gender" => "Male"
    ),    
    array(
        "id" => 3,
        "name" => "Diana Prince",
        "city" => "New Mexico",
        "gender" => "Female"
    ),

    array(
        "id" => 5,
        "name" => "Bruce Wayne",
        "city" => "Gotham",
        "gender" => "Male"
    ),
);

what should i have as a response is :

$data = array(
        "id" => 1,
        "name" => "Bruce Wayne",
        "city" => "Gotham",
        "gender" => "Male"
    ),
    array(
        "id" => 5,
        "name" => "Bruce Wayne",
        "city" => "Gotham",
        "gender" => "Male"
    ),
    array(
        "id" => 2,
        "name" => "Diana Prince",
        "city" => "Gotham",
        "gender" => "Male"
    ),
   array(
        "id" => 3,
        "name" => "Diana Prince",
        "city" => "New Mexico",
        "gender" => "Female"
    ),
    array(
        "id" => 4,
        "name" => "Speedy Gonzales",
        "city" => "New Mexico",
        "gender" => "Male"
    )
);

In my code I have an assoc array i nedd to sort it by a given key without removing duplicate value that all what i need How can I do this ? thank you

Try with that: stackoverflow.com/questions/7091144/…

Grzegorz Lasak
– Grzegorz Lasak

2019-04-26 12:07:06 +00:00
Commented Apr 26, 2019 at 12:07 — Grzegorz Lasak
– Grzegorz Lasak, Commented Apr 26, 2019 at 12:07

Qirel · Accepted Answer · 2019-04-26 12:06:17Z

0

Use multidimensional sorting through array_mutlisort() combined with array_column() (to fetch which column is the basis for sorting). This function is by reference, so you don't need to assign the result back to something.

$data = array(...);
array_multisort(array_column($data, "name"), SORT_ASC, $data);
print_r($data);

Live demo at https://3v4l.org/1n8fW

answered Apr 26, 2019 at 12:06

Qirel

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Comments

Rakesh Jakhar · Accepted Answer · 2019-04-26 12:09:15Z

0

You can use usort

function compare($a, $b)
{
   if ($a["name"] == $b["name"]) {
    return 0;
   }
  return ($a["name"] < $b["name"]) ? -1 : 1;
}

usort($data,"compare");

answered Apr 26, 2019 at 12:09

Rakesh Jakhar

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