How to pass multidimensional array via ajax and display it? - php

Question

I'm creating my project using OOP. I need to pass all the values inserted in the database in the form of array. And it's a multidimensional array. SO when I pass now via ajax as a 'text' datatype it displays array in console.log(). But I'm unsure if this is the correct way and how to display the value in a table form in jquery.
Below are the functions where the values returned to the object in another page.
public function selectType()
{
$sql="SELECT * FROM car_type";
$stmt =connection::$pdo->prepare($sql);
$stmt->execute();
$carType=array();
while($row = $stmt->fetch())
{
array_push($carType,$row['car_type']);
}
return $carType;
}
public function selectMaker()
{
$sql="SELECT * FROM car_maker";
$stmt =connection::$pdo->prepare($sql);
$stmt->execute();
$carMaker=array();
while($row = $stmt->fetch())
{
array_push($carMaker,$row['car_maker']);
}
return $carMaker;
}
ANd this is how I'm fetching the values to be passed to another page to be displayed to the user.
$setting = new setting($car_type,$car_maker,$rental_type,$rental);
//$setting->connection;
$setting->addCarType();
$setting->addCarMaker();
$setting->addRentalBy();
$carType=$setting->selectType();
$carMaker=$setting->selectMaker();
$json=array();
array_push($json,array("type"=>$carType,"maker"=>$carMaker));
echo $json;
Finally ajax to fetch and display data
$("#submit").on("click",function()
{
$("#set_setting").submit(function(){
data = $(this).serialize()
$.ajax({
type: "POST",
dataType: "html",
url: "submit_setting.php", //Relative or absolute path to response.php file
data: data,
success: function(data) {
//hide the form
$("#set_setting").slideUp("slow");
//show the result
for (i = 0; i < data.length; i++) {
console.log(data);//outputs array
$(".the-return").html(data);
}
}
});
return false;
});
});

Answer 1

You need to pass array as JSON and post it using name value pairs.
var data = {a:{'foo':'bar'},b:{'this':'that'}};
$.ajax({ url : '/',
type : 'POST',
data : {'data':JSON.stringify(data)},
success : function(){ }
});
And in backend (PHP):
$data = json_decode($_POST['data']);
print_r($data);
// Result:
// Array( "a" => Array("foo"=> "bar"), "b" => Array("that" => "this"))