Adding to a multidimensional associative array (in PHP) - php

Question

I'm returning an associative array via PDO that has the structure:
Array
(
[0] => Array
(
[pesttopicID] => 42
[sPestName] => CMSM Trap Surveying and Pest Management
[quizID] => 609
[bTier1] => 1
[sDesc] => Workshop assessment
)
[1] => Array
(
[pesttopicID] => 34
[sPestName] => Trap Surveyor
[quizID] => 451
[bTier1] => 1
[sDesc] => Competency for CM OAP
)
)
I want to add a key-value pair to the "inner" array, but all my attempts of trying to use posted solutions to the generic issue of adding to an associative array...
:
$results = $statement->fetchAll(PDO::FETCH_ASSOC);
$newkey='myNewKey';
$newval='myNewValue';
foreach($results as $row){
$results[][$newkey] = $newval;
foreach ($row as $key=>$value){
... some reporting stuff
}
}
...result in the pair being added to the "outer" array e.g.
Array
(
[0] => Array <---- I want the new pair in this "inner" array
(
[pesttopicID] => 42
[sPestName] => CMSM Trap Surveying and Pest Management
[quizID] => 609
[bTier1] => 1
[sDesc] => Workshop assessment
)
[1] => Array <---- I want the new pair in this "inner" array
(
[pesttopicID] => 34
[sPestName] => Trap Surveyor
[quizID] => 451
[bTier1] => 1
[sDesc] => Competency for CM OAP
)
[2] => Array
(
[myNewKey] => myNewValue
)
)
Is this possible?
Thanks/Tom

Answer 1

You have to it like below:-
$newkey='myNewKey';
$newval='myNewValue';
foreach($results as &$row){ //use reference variable
$row[$newkey] = $newval;// remove the second foreach if not necessary
//if second foreach is necessary then add it no problem
}
Output:-https://eval.in/856983
Or you can do like this also:-
$newkey='myNewKey';
$newval='myNewValue';
foreach($results as $key=>$row){ //use key now
$results[$key][$newkey] = $newval;// remove the second foreach if not necessary
//if second foreach is necessary then add it no problem
}
Output:-https://eval.in/856987