Php code to get json data from mysql database - php

Question

Iam trying to create a JSON object out of my SQL data in PHP. How to do that?
This is my approach, which does not work so far.
<?php
header("Access-Control-Allow-Origin: *");
header('Content-Type: text/html; charset=utf-8');
$dns = "mysql:host=localhost;dbname=afreen";
$user = "root";
$pass = "";
try {
$conn = new PDO($dns, $user, $pass);
if (!$conn) {
echo "Not connected";
}
$query = $conn->prepare('SELECT id, name, salary from afreen');
$query->execute();
$registros = "[";
while ($result = $query->fetch()) {
if ($registros != "[") {
$registros .= ",";
}
$registros .= '{"id": "' . $result["id"] . '",';
$registros .= '"name": "' . $result["name"] . '"}';
$registros .= '"salary": "' . $result["salary"] . '"}';
$registros .= "]";
echo $registros;
} catch (Exception $e) {
echo "Erro: " . $e->getMessage();
}
?>`

Answer 1

Why dont you try the json_encode() for this ? Why you try for unnecessary while loop.
$query = $conn->prepare('SELECT id, name, salary from afreen');
Then try the json_encode() to get the Data in Json format.
Sources - http://php.net/json_encode

Answer 2

<?php
header("Access-Control-Allow-Origin: *");
header('Content-type: application/json');
header('Content-Type: text/html; charset=utf-8');
$dns = "mysql:host=localhost;dbname=afreen";
$user = "root";
$pass = "";
try {
$conn = new PDO($dns, $user, $pass);
if (!$conn) {
echo "Not connected";
}
$query = $conn->prepare('SELECT id, name, salary from afreen');
$query->execute();
$registros= [];
while ($result = $query->fetch()) {
array_push($registros,array(
'id' =>$result["id"],
'title' =>$result["name"],
'salary' =>$result["salary"]
));
$output = json_encode(array("product"=>$registros));
print_r($output);
} catch (Exception $e) {
echo "Erro: " . $e->getMessage();
}
?>