How to add values into an associative array? - php

Question

If I want to add values to an array in a while loop I could do $arr[] = "some". But how can I do this if I have an associative array, for example:
while($result = $result->fetch_array(MYSQLI_ASSOC))
{
$arr[]["some_key"] = "some";
$arr[]["other_key"] = "some2";
}
But this will give me something like Array ( [0] => Array ( [some_key] => some) [1] => Array ( [other_key] => some2). So what is the right way to add values into an associative array inside a loop?

Answer 1

Create a temporary array for your keys, and then push that temporary array onto the main one:
$arr = [];
loop(condition) {
$tmp = [];
$tmp['some_key'] = 'some value';
$tmp['other_key'] = 'other value';
$arr[] = $tmp;
}

Answer 2

This will not overwrite your values:
$arr = array();
while($result = $result->fetch_array(MYSQLI_ASSOC))
{
$tmp = array();
foreach($result as $key=>$value)
{
$tmp[$key] = $value;
}
$arr[]=$tmp;
}
Or more succinctly:
$arr = array();
while($result = $result->fetch_array(MYSQLI_ASSOC))
{
$arr[]=$result;
}
Since PHP defaults to copying rather than referencing.
If you wanted to store them as an assoc. array of arrays you might do this:
$arr = array();
while($result = $result->fetch_array(MYSQLI_ASSOC))
{
foreach($result as $key=>$value)
{
if(!isset($arr[$key])){
$arr[$key] = array();
}
$arr[$key][] = $value;
}
}