remove particular key=>value from array php

Question

i have a array like this

Array
(
    [0] => Array
        (
            [to_id] => 3
            [email] => [email protected]
            [user_id] => 3
        )

    [2] => Array
        (
            [to_id] => 2
            [email] => [email protected]
            [user_id] => 2
        )

    [4] => Array
        (
            [to_id] => 5
            [email] => [email protected]
            [user_id] => 5
        )

)

and i would like to get array like below

Array
(
    [0] => Array
        (
            [email] => [email protected]
            [user_id] => 3
        )

    [2] => Array
        (
            [email] => [email protected]
            [user_id] => 2
        )

    [4] => Array
        (
            [email] => [email protected]
            [user_id] => 5
        )

)

i got this working by looping with foreach , but i would like to do it single array function ,is it possible ,please help

Answer 1

$array = array_map(
    function (array $ar) { return array_diff_key($ar, array_flip(array('to_id'))); },
    $array
);

There's no one single function which does this. You have to write a bit of code. You will also always have to loop through the array. You can only dress that loop up in different ways and dress the action of unsetting the key up in different ways. I wouldn't necessarily think anything is anymore efficient or clearer than a straight forward loop. But, well, go with the above if you're looking for something more fancy.

Answer 2

//This is the array name in which your data is stored.
$my_array = array($array_data);

// now lets get one level inside the array 
foreach($my_array as $key => $value ){

// ok now unset un-wanted index from the array into a temporary array
unset($value['to_id']);

// overwrite our temporary array to original array keeping the keys same as before.
$my_array[$key] = $value;
//Thats it your Problem Solved :)
}

echo "<pre>";
print_r($my_array);
echo "</pre>";