Give autonumber Id MySQL back with an AJAX call? [duplicate] - php

Question

Here's my PHP code called during jQuery AJAX call:
<?php
include '../code_files/conn.php';
$conn = new Connection();
$query = 'SELECT Address_1, Address_2, City, State, OfficePhone1, OfficePhone2, Fax1, Fax2, Email_1, Email_2
FROM clients WHERE ID = ?';
$conn->mysqli->stmt_init();
$stmt = $conn->mysqli->prepare($query);
$stmt->bind_param('s', $_POST['ID']);
$stmt->execute();
$result = $stmt->get_result();
$row = $result->fetch_assoc();
echo json_encode($row);
?>
And the client-side code is:
$.post(url, {ID:$('#ddlClients').val()},
function(Result){
// Result
}
);
The AJAX call is successfully completed. I get the value of Result as
"{"Address_1":"Divisional Office 1","Address_2":"The XYZ Road",.....and so on
What I want is to be able to use the values returned like Result.Address_1, Result.Address_2 and so on. But I can't do it using the above code. I tried using $row = $result->fetch_object() and $row = $result->fetch_array(), but no use.
And I know that this can be done by this code on the server side:
$row = $result->fetch_assoc();
$retVal = array("Address_1"=>$row['Address_1'], "Address_2"=>$row['Address_2'].......);
echo json_encode($retVal);
or
$row = $result->fetch_object();
$retVal = array("Address_1"=>$row->Address_1, "Address_2"=>$row->Address_2.......);
echo json_encode($retVal);
Is there a way to send the $row directly to the client side JavaScript and ready to be used as JSON object, without manually creating an array first?

Answer 1

The response you are getting from your PHP script is in plain text. You can however parse that string into an object using $.parseJSON in your callback function:
$.ajax({
url : url,//note that this is setting the `url` property to the value of the `url` variable
data : {ID:$('#ddlClients').val()},
type : 'post',
success : function(Result){
var myObj = $.parseJSON(Result);
//you can now access data like this:
//myObj.Address_1
}
}
);
You can let jQuery do this for you by setting the dataType property for your AJAX call to json:
$.ajax({
url : url//note that this is setting the `url` property to the value of the `url` variable
data : {ID:$('#ddlClients').val()},
dataType : 'json',
type : 'post',
success : function(Result){
//you can now access data like this:
//Result.Address_1
}
}
);
The above examples expect that the response from the server to be in this format (from your question):
"{"Address_1":"Divisional Office 1","Address_2":"The XYZ Road"}

Answer 2

In your $.post call, the last argument could be the data-type: json:
$.post(url, {ID:$('#ddlClients').val()},
function(Result){
alert(Result.Address_1);
},'json'
);
Everything should work then, as it looks like you are doing everything right.

Answer 3

json_encode accepts objects, so there's no need to do that automatic array-building.:
$row = $result->fetch_object();
echo json_encode($row);
It's as simple as that!