<?php
$array = array (
0 =>
(object)array(
'tenure' => '1 year to less than 2 years'
),
1 =>
(object)array(
'tenure' => '10 years to less than 15 years'
),
2 =>
(object)array(
'tenure' => '15 years or more'
),
3 =>
(object)array(
'tenure' => '2 years to less than 5 years'
),
4 =>
(object)array(
'tenure' => '5 years to less than 10 years'
)
);
array_multisort(array_column($array, 'tenure'), SORT_ASC, SORT_NATURAL, $array);
print_r($array);
Array
(
[0] => stdClass Object
(
[tenure] => 1 year to less than 2 years
)
[1] => stdClass Object
(
[tenure] => 2 years to less than 5 years
)
[2] => stdClass Object
(
[tenure] => 5 years to less than 10 years
)
[3] => stdClass Object
(
[tenure] => 10 years to less than 15 years
)
[4] => stdClass Object
(
[tenure] => 15 years or more
)
)