Grouping PHP array andrey понедельник, 14 апреля 2014 г. No Comment

When we have a same ids for multiple array values, we can group those array values for easy handling.

Consider if we have a array like this,

Array
(
    [0] => Array
        (
            [id] => 96
            [shipping_no] => 212755-1
            [part_no] => reterty
            [description] => tyrfyt
            [packaging_type] => PC
        )

    [1] => Array
        (
            [id] => 96
            [shipping_no] => 212755-1
            [part_no] => dftgtryh
            [description] => dfhgfyh
            [packaging_type] => PC
        )

    [2] => Array
        (
            [id] => 97
            [shipping_no] => 212755-2
            [part_no] => ZeoDark
            [description] => s%c%s%c%s
            [packaging_type] => PC
        )

)

If we want to group the above array by `id`, we can use this following piece of code,

$result = array();
foreach ($arr as $data) {
  $id = $data['id'];
  if (isset($result[$id])) {
     $result[$id][] = $data;
  } else {
     $result[$id] = array($data);
  }
}

So, the  print_r($result) result will be,

Array
(
    [96] => Array
        (
            [0] => Array
                (
                    [id] => 96
                    [shipping_no] => 212755-1
                    [part_no] => reterty
                    [description] => tyrfyt
                    [packaging_type] => PC
                )

            [1] => Array
                (
                    [id] => 96
                    [shipping_no] => 212755-1
                    [part_no] => dftgtryh
                    [description] => dfhgfyh
                    [packaging_type] => PC
                )
        )
    [97] => Array
        (
            [0] => Array
                (
                    [id] => 97
                    [shipping_no] => 212755-2
                    [part_no] => ZeoDark
                    [description] => s%c%s%c%s
                    [packaging_type] => PC
                )

        )

When we have a same ids for multiple array values, we can group those array values for easy handling.

Consider if we have a array like this,

Array
(
    [0] => Array
        (
            [id] => 96
            [shipping_no] => 212755-1
            [part_no] => reterty
            [description] => tyrfyt
            [packaging_type] => PC
        )

    [1] => Array
        (
            [id] => 96
            [shipping_no] => 212755-1
            [part_no] => dftgtryh
            [description] => dfhgfyh
            [packaging_type] => PC
        )

    [2] => Array
        (
            [id] => 97
            [shipping_no] => 212755-2
            [part_no] => ZeoDark
            [description] => s%c%s%c%s
            [packaging_type] => PC
        )

)

If we want to group the above array by `id`, we can use this following piece of code,

$result = array();
foreach ($arr as $data) {
  $id = $data['id'];
  if (isset($result[$id])) {
     $result[$id][] = $data;
  } else {
     $result[$id] = array($data);
  }
}

So, the  print_r($result) result will be,

Array
(
    [96] => Array
        (
            [0] => Array
                (
                    [id] => 96
                    [shipping_no] => 212755-1
                    [part_no] => reterty
                    [description] => tyrfyt
                    [packaging_type] => PC
                )

            [1] => Array
                (
                    [id] => 96
                    [shipping_no] => 212755-1
                    [part_no] => dftgtryh
                    [description] => dfhgfyh
                    [packaging_type] => PC
                )
        )
    [97] => Array
        (
            [0] => Array
                (
                    [id] => 97
                    [shipping_no] => 212755-2
                    [part_no] => ZeoDark
                    [description] => s%c%s%c%s
                    [packaging_type] => PC
                )

        )

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