PHP Illegal string offset when trying to access array values - php

Question

I might be punching slightly above my weight here or maybe its a really simple problem with a simple solution.
MY PROBLEM
I cant access array key values in foreach()
When creating the array in a function it seems that the array is duplicating, does a double iteration when created(as you can see in image below)
STEP 1: Array Creation
$results = $stmnt->fetchAll();
if ($stmnt->rowCount() > 0) {
$totalCorrectPicks = 0;
//--->HERE ARRAY KEYS ARE CREATED FROM QUERYING DB
foreach ($results as $index => $result) {
$returnResult = array('picked' => $result['team'], 'homeScore' => $result['homeScore'], 'awayScore' => $result['awayScore'], 'homeTeam' => $result['homeTeam'],
'awayTeam' => $result['awayTeam'], 'score' => $result['score']);
}//end foreach
//------> HERE ELEMENTS GETS APPENDED TO ARRAY
$pickedTeam = $result['team'];
if ($result['homeScore'] > $result['awayScore']) {
$matchOutcome = $result['homeTeam'];
$matchScore = $result['homeScore'];
$returnResults['matchOutcome'] = $matchOutcome;
$returnResults['matchScore'] = $matchScore;
}
if ($result['awayScore'] > $result['homeScore']) {
$matchOutcome = $result['awayTeam'];
$matchScore = $result['awayScore'];
$returnResults['matchOutcome'] = $matchOutcome;
$returnResults['matchScore'] = $matchScore;
}
if ($pickedTeam === $matchOutcome) {
$totalCorrectPicks++;
$margin = abs($matchScore - $result['points']);
//INDEX WILL START AT 0 SO WE ADD ONE TO $INDEX
$nrGames = $index + 1;
$returnResults['totatlCorrectPicks'] = $totalCorrectPicks;
$returnResults['margin'] = $margin;
$returnResults['nrGames'] = $nrGames;
}
elseif ($pickedTeam !== $matchOutcome) {
$margin = 'wrongPick';
$returnResults['margin'] = $margin;
}
}
}
if(isset($returnResults)){
print_r($returnResults);
return $returnResults;
}
return false;
}
STEP 2 Calling function and using array; leads to illegal string offset
<?php $picks = checkUserPicks('5');
foreach ($picks as $index => $pick){
?>
<tr>
<td>
<?php echo $pick['picked']; ?>
</td>
<td>
<?php echo $pick['matchOutcome']; ?>
</td>
<td>
<?php echo $pick['margin']; ?>
</td>
</tr>
<?php } ?>
NOTE: you can see the array value in the image posted above.
Questions
1) Why does it seem like the array is duplicated (see image)?
2) How can I fix the illegal string offset and what causes it?
Thanks
UPDATE
New Array Structure after removing [] from $returnResults[]

Answer 1

After end of foreach loop, matchOutcome, matchScore, etc are appended to the array. Shouldn't it be inside the loop?
If you are expecting more than one row, then you need to create array by maintaining its index as follows:
$returnResults = array(); // Initialize array
foreach ($results as $index => $result) {
$returnResults[$index] = array('picked' => $result['team'], 'homeScore' => $result['homeScore'],
'awayScore' => $result['awayScore'], 'homeTeam' => $result['homeTeam'],
'awayTeam' => $result['awayTeam'], 'score' => $result['score']);
//------> HERE ELEMENTS GETS APPENDED TO ARRAY
$pickedTeam = $result['team'];
if ($result['homeScore'] > $result['awayScore']) {
$matchOutcome = $result['homeTeam'];
$matchScore = $result['homeScore'];
$returnResults[$index]['matchOutcome'] = $matchOutcome;
$returnResults[$index]['matchScore'] = $matchScore;
}
.
.
elseif ($pickedTeam !== $matchOutcome) {
$margin = 'wrongPick';
$returnResults[$index]['margin'] = $margin;
}
}//end foreach