Half of data lost on JSON conversion? - php

Question

I have a mysql database of countries, 250 in total, which in want to give over to an Android app. I know i have to use php in between to parse the result into JSON. This is it:
<?php
require_once('connection.php');
$response = array();
$resultarray = array();
$result = mysqli_query($con, "SELECT * FROM countries");
if (!empty($result)) {
// check for empty result
while ($row=mysqli_fetch_assoc($result)) {
print $row;
$resultarray = mysqli_fetch_array($result);
$Laender = array();
$Countries[de] = $resultarray["de"];
$response["Countries"] = array();
array_push($response["Countries"], $Countries);
echo json_encode($response);
}
}
?>
I ran the script in my browser and it displays correctly, except that half the countries are missing. There are only 125 countries displayed. Where have they vanished to?

Answer 1

Both functions mysqli_fetch_assoc and mysqli_fetch_array do the same - they fetch next record.
So, in your while you fetch first record with mysqli_fetch_assoc and then immediately fetch second record with mysqli_fetch_array. So, the first record is lost. And this happens on every iteration, so half of your records are lost.
Get rid of mysqli_fetch_array call:
$response["Countries"] = array();
while ($row = mysqli_fetch_assoc($result)) {
array_push($response["Countries"], $row["de"]);
}
echo json_encode($response);