Parsing MultiDimensional PHP Array to Remove Duplicate Key Values - php

Question

Having some issues parsing my multidimensional php array and removing duplicates. I've spent a good four hours trying to figure out what I'm doing wrong with no luck. If someone could help me out that would wonderful.
Format of multidimensional array:
Array(Array("id"=>?, "step_num"=>?, "desc"=>?))
Example data set:
Array(
[0]=> Array([id]=>1, [step_count]=>1, [desc]=>"Something"),
[1]=> Array([id]=>2, [step_count]=>1, [desc]=>"Something New"),
[2]=> Array([id]=>3, [step_count]=>1, [desc]=>"Something Newest")
)
Here's how I am trying to only have the step_count with the most recent desc by comparing id values: ($subStepsFound has the same format as the above array and $results is an empty array to begin with)
foreach($subStepsFound AS $step){
$found = false;
$removeEntry = false;
$index = 0;
foreach($results AS $key=>$result){
if($step['step_count'] == $result['step_count']){
$found = true;
if($step['id'] > $result['id']){
$removeEntry = true;
}
}
if($removeEntry === true){
$index = $key;
}
}
if($removeEntry === true){
//unset($results[$index]);
$results[$index] = $step;
}
if($found === false){
$results[] = $step;
}
}
Expected output of the resulting array:
Array(
[0]=> Array([id]=>4, [step_count]=>1, [desc]=>"Something Newest")
)

Answer 1

See 1., 2., 3. in comments:
foreach($subStepsFound AS $step){
$found = false;
$removeEntry = false;
$index = 0;
foreach($results AS $key=>$result){
if($step['step_count'] == $result['step_count']){
$found = true;
if($step['id'] > $result['id']){
$removeEntry = true;
}
}
if($removeEntry === true){
$results[$key] = $step; // 2. UP TO HERE
$removeEntry = false; // 3. RESET $removeEntry
}
}
/*
if($removeEntry === true){
//unset($results[$index]);
$results[$index] = $step; // 1. MOVE THIS...
}
*/
if($found === false){
$results[] = $step;
}
}
print_r($results);
Online example: http://sandbox.onlinephpfunctions.com/code/1db78a8c08cbee9d04fe1ca47a6ea359cacdd9e9

Answer 2

/*super_unique: Removes the duplicate sub-steps found*/
function super_unique($array,$key){
$temp_array = array();
foreach ($array as &$v) {
if (!isset($temp_array[$v[$key]])) $temp_array[$v[$key]] =& $v;
}
$array = array_values($temp_array);
return $array;
}
$results = super_unique($subStepsFound, 'step_count');