Getting Values from MultiDimensional array

Question

My Array shown as follows:

Array
(
[0] => Array
    (
        [amount_id] => 1
        [enquiry_id] => 1
        [project_id] => 1
    )

[1] => Array
    (
        [amount_id] => 4
        [enquiry_id] => 4
        [project_id] => 4
    )

[2] => Array
    (
        [amount_id] => 5
        [enquiry_id] => 5
        [project_id] => 5
    )

)

This Array can be increase. How can i get value of each 'amount_id' from this array? What function should i use? Can for each function will work?

Answer 1

Just try with:

$input  = array( /* your data */ );
$output = array();
foreach ($input as $data) {
  $output[] = $data['amount_id'];
}

Answer 2

You can use a one-liner array_walk() to print those..

array_walk($arr,function($v){ echo $v['amount_id']."<br>";});

Working Demo

Answer 3

Do like this in array_map or Use array_column for The version PHP 5.5 or greater

 $outputarr= array_map(function($item){ return $item['amount_id'];},$yourarr);
 print_r($outputarr);

Answer 4

Try the following, this is accessing the specific array - easier to debug later on and better speed:

$num=count($your_array);
for($i="0"; $i<$num; $i++)
    {
    echo $your_array[$i]['amount_id'];
    }

you could loop until $i < count($your_array) but it means that the count will run in every loop, for high performance sites I wouldn't do it.

you could access a specific element in a 2D array by $your_array[$the_index]['amount_id'] or other index.