Array Formation - PHP - php

Question

I am running an SQL Query in order to get the post IDs of the user currently logged in.
My query works as designed.
$userGadgets = $wpdb->get_results("SELECT item_id FROM mg_gd_mylist WHERE user_id = '$user_id'", ARRAY_A);
The issue I am facing has to do with the array returned.
Array
(
[0] => Array
(
[item_id] => 10318
)
[1] => Array
(
[item_id] => 10378
)
[2] => Array
(
[item_id] => 10566
)
[3] => Array
(
[item_id] => 10608
)
[4] => Array
(
[item_id] => 10614
)
[5] => Array
(
[item_id] => 10648
)
[6] => Array
(
[item_id] => 10292
)
[7] => Array
(
[item_id] => 10274
)
[8] => Array
(
[item_id] => 10306
)
[9] => Array
(
[item_id] => 9312
)
[10] => Array
(
[item_id] => 10652
)
[11] => Array
(
[item_id] => 10324
)
[12] => Array
(
[item_id] => 10342
)
[13] => Array
(
[item_id] => 10696
)
[14] => Array
(
[item_id] => 10672
)
[15] => Array
(
[item_id] => 10372
)
)
The model I am trying to produce is the following
Array
(
[0] => 140 //The item_id string as an integer
[1] => 141
[2] => 142
)
Any ideas on that one ? Thank you in advance.

Answer 1

check this code , guess you want to single array result
check array_reduce () built in function
<?php
$your_array = array(0 => array('item_id' => 3160), 1 => array('item_id' => 13123), 2 => array('item_id' => 234234), 3 => array('item_id' => 2123));
echo "<pre>";
print_r($your_array);
$convert_array = array_map('intval', array_column($your_array, 'item_id'));
echo "<pre>";
print_r($convert_array);
then your original Array :
Array
(
[0] => Array
(
[item_id] => 3160
)
[1] => Array
(
[item_id] => 13123
)
[2] => Array
(
[item_id] => 234234
)
[3] => Array
(
[item_id] => 2123
)
)
and output :
Array
(
[0] => 3160
[1] => 13123
[2] => 234234
[3] => 2123
)

Answer 2

Why would that be a bad output?
Simply use:
array = [];
foreach($arrayReturned as $i=>$row){
// you get every data with $row['item_id'], for example
array[] = $row['item_id'];
}