How to loop multi dimensional array to get values

Question

I have this multi-dimensional array and I'm trying to convert it into array given below

Array
(
    [id] => Array
        (
            [0] => 1
            [1] => 3
        )
    [team_id] => Array
        (
            [0] => 654868479
            [1] => 463733228
        )
    [seed] => Array
        (
            [0] => 1
            [1] => 2
        )
)

I want following result

Array
(
    [0] => Array
        (
            [id] => 1
            [team_id] => 654868479
            [seed] => 1
        )
    [1] => Array
        (
            [id] => 3
            [team_id] => 463733228
            [seed] => 3
        )
)

Here is what I have achieved so far. I actually want $seeded[] array is the same format as it is required to submit update_batch. Which will ultimately update database records.

$seeds = $this->input->post();
$i=0;
foreach ($seeds as $key => $value){
    if(!empty($key) && !empty($value)){
        for($i=0; $i=5; $i++) {
            $seeded[] = array(
                'id' => (id go here),
                'tournament_id' => $tournament_id,
                'stage_id' => $stage_id,
                'seed_id' => (seed go here),
                'team_name' => (team_id go here),
            );
        }
        $this->db->update_batch('tournament_seed', $seeded, 'id');
    }
}

Musa Butt · Accepted Answer · 2019-04-13 21:34:42Z

2

Iterate the array and convert it using below code.

$seeded= array();
for($i =0; $i < count($seeds['id']); $i++){
    $tempArr['id'] = $seeds['id'][$i];
    $tempArr['team_id'] = $seeds['team_id'][$i];
    $tempArr['seed'] = $seeds['seed'][$i];
    $seeded[] = $tempArr;
}

edited Apr 13, 2019 at 21:34

Musa Butt

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answered Apr 13, 2019 at 21:07

SachinPatil4991

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3 Comments

Miroslav Glamuzina Over a year ago

Please quote your indexes, they will be read as PHP constants (in future versions of PHP), which will be undefined.

Musa Butt Over a year ago

Undefined variable: arr

SachinPatil4991 Over a year ago

Assign old array to $arr or use your old array name

Miroslav Glamuzina · Accepted Answer · 2019-04-13 21:07:26Z

0

I've written a function that will allow you to transform any array of similar structure to what you have above, to an array of the form you are looking for.

You can build your array in this way:

$arr = [
    'id'      => [1, 3],
    'team_id' => [654868479, 463733228],
    'seed'    => [1, 2],
];

function array_flatten($arr) {
    $res = [];
    foreach($arr as $id => $valuesArray) {
        foreach($valuesArray as $index => $value)
            $res[$index][$id] = $value;
    }
    return $res;
}

print_r(array_flatten($arr));

Hope this helps,

answered Apr 13, 2019 at 21:07

Miroslav Glamuzina

4,5872 gold badges23 silver badges33 bronze badges

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