How to insert a new key value pair in array in php?

Question

I\'ve an array as follows named $test_package_data. For the reference I\'m printing first two elements of it:

Array
(
    [0] => Array
               


        

Answer 1

To add:

$arr["key"] = "value";

Then simply return $arr

Can't return directly like this way return $arr["key"] = "value";

Answer 2

foreach($test_package_data as $key=>$data ) {

   $category_detail_arr = $test_package_data[$key]['category_detail'];

   foreach( $category_detail_arr as $i=>$value ) {
     $test_package_data[$key]['category_detail'][$i]['count'] = $some_value;////<----Here
   }

}

Answer 3

If you are creating new array then try this :

$arr = ['key' => 'value'];

And if array is already created then try this :

$arr['key'] = 'value';

Answer 4

Try this:

foreach($array as $k => $obj) { 
    $obj->{'newKey'} = "value"; 
}