Array output format in php - php

Question

I am running SQL select query,getting the result in below format after executing the query.
Array
(
[0] => Array
(
[usertype_id] => 14
)
[1] => Array
(
[usertype_id] => 15
)
[2] => Array
(
[usertype_id] => 17
)
)
But i need result in below format
Array
(
[0] => 14
[1] => 15
[2] => 17
)
So how to loop through this to get the output in above format.

Answer 1

array_column works just fine here:
https://3v4l.org/qX46k
<?php
$input = [['usertype_id' => 14], ['usertype_id' => 15], ['usertype_id' => 17]];
$expected = [14,15,17];
$result = array_column($input, 'usertype_id');
var_dump($result === $expected);
Output for 7.1.25 - 7.3.2
bool(true)

Answer 2

use array array_map()
$res= array_map(function($arr=array()){
return $arr['usertype_id'];
},$input);
print_r($res);

Answer 3

If you are using PDO, then you can do as below
<?php
$sth = $dbh->prepare("SELECT usertype_id FROM user");
$sth->execute();
/* Fetch all of the values of the first column */
$result = $sth->fetchAll(PDO::FETCH_COLUMN, 0);
print_r($result);
?>
Reference: http://php.net/manual/en/pdostatement.fetchall.php