save table records in associative array in php - php

Question

I have an associative array. After I select my records from my table (with two columns: objName,objCost), I want to save them in my array like this:
array(
'objName'=>$row['objName'],
'objCost'=>$row['objCost']
)
How should I do this?
This is my code:
$output = '';
$arr = array();
$sql = "SELECT * FROM obj WHERE objName LIKE '%" . $_POST["search"] . "%'";
$result = $db->query($sql) or die(mysql_error());
if ($result->rowCount() != 0) {
while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
//here i should insert my rows into my array
}
$json_arr = json_encode($arr,JSON_UNESCAPED_UNICODE);
echo $json_arr;
} else {
echo 'Data Not Found';
}

Answer 1

According to your code,
$arr[] = ['objName'=>$row['objName'],'objCost'=>$row['objCost']];
Then you can encode the array and pick up the object on the other side with javascript or php. Which ever suits you
json_encode($arr);
In you Ajax success, get the objects and use the values as you deem fit
success: function (data) {data = JSON.parse(data);
for(var i = 0; i < data.length; i++){
alert(data[i].objName);
}
}
see jQuery loop over JSON result from AJAX Success? on how to loop through your results in jquery