create parent child array from inline data in php - php

Question

actually i have simple problem but i forget how to solve it.. :D
i have data on table with following format
01 Johson 01 Craig
01 Johson 02 Daniel
01 Johson 03 Abbey
02 Dawson 01 Brown
02 Dawson 02 Agust
03 Brick 01 Chev
03 Brick 01 Flinch
so i want it to become an array like this
01 Johson => 01 Craig
``````````````02 Daniel
```````````````03 Abey
`
etc...
how to iterate trough the data and make it array like that...
i'm newby in PHP :))

Answer 1

There are a number of ways to get the outcome, though I am partial to using a mysql group concat:
select
col1,
group_concat(col2) as col2
from
tableName
group by
col1;
This will return that particular column of data in a comma delimted string, which you can then very easily explode inside your PHP code as it comes from the database.
Even though a comma is the default for group_concat, you can easily change it to concat the rows of data on a different string as well.

Answer 2

Is this what you want?
$results = array();
while ($row = mysqli_fetch_assoc($query_result)) {
$parent = $row['parentid'].' '.$row['parentname'];
if (!array_key_exists($parent, $results)) {
$results[$parent] = array();
}
$results[$parent][] = $row['childid'].' '.$row['childname'];
}