Php multidimentional array convert to one dimentional

Question

I have an array which consist monthly information as shown below :

[appr] => Array
            (
                [0] => Array
                    (
                        [month] => August
                        [approd] => 23
                    )

                [1] => Array
                    (
                        [month] => September
                        [approd] => 546
                    )

                [2] => Array
                    (
                        [month] => October
                        [approd] => 234
                    )

            )

I want the output as below

[appr] => Array(
        August => 23,
        September => 546,
        October => 234
   )

can anybody help me to achieve this using php.

Loop it through the array and create your customized array. Show us what you have tried so far. — Samir Selia, Dec 30 '16 at 07:38
I know loops can achieve what i required , but is there any built in functions in php to get it , any shortcut coz i dont want to use loops — Madhuri, Dec 30 '16 at 07:40

score 2 · Accepted Answer · answered Dec 30 '16 at 07:44

2

If you're looking for a simple one-liner solution, use array_column() and array_combine() functions.

Try this:

$array['appr'] = array_combine(array_column($array['appr'], "month"), array_column($array['appr'], "approd"));

answered Dec 30 '16 at 07:44

Indrasis Datta

8,692
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score 2 · Answer 2 · answered Dec 30 '16 at 07:45

Simply loop in your array and create a new array

$array = array(array('month'=>'August','approd'=>'23'),array('month'=>'September','approd'=>'56'),array('month'=>'October','approd'=>'234'),);
$new = array();
foreach($array as $val) {
   $new['appr'][$val['month']] = $val['approd'];
}

score 1 · Answer 3 · answered Dec 30 '16 at 07:50

"One-line" solution using array_column function:

$arr['appr'] = array_column($arr['appr'], 'approd', 'month');

print_r($arr);

The output:

Array
(
    [appr] => Array
        (
            [August] => 23
            [September] => 546
            [October] => 234
        )
)

score 0 · Answer 4 · answered Dec 30 '16 at 08:02

Another option is to use array_walk_recursive:

<?php

$array = array(
    0 => array(
        'something',
    ),
    1 => array(
        'else',
    )
);


// If the keys are unique
$newArray = array();
array_walk_recursive($array, function($v, $k) use (&$newArray) {
    $newArray[$k] = $v;
});

// If you have duplicate keys
$newArray = array();
array_walk_recursive($array, function($v) use (&$newArray) {
    $newArray[] = $v;
});

And finally output the result:

print_r($newArray);

Resources

array_walk_recursive - Manual

Php multidimentional array convert to one dimentional

4 Answers4

Resources