Sending json with php and parse it in ajax call
User2589904’s Question:
I don’t have experience using JSON with php and ajax and I need your help.
I have a php page that validates user input… Before using json, I used to store them in an array. I was able to parse the json when I store my values in an array like this
$data = array(“success”=>true, “msg”=>”my masg”);
json_decode($data);
and then in my ajax call on success function I data.success and data.msg
How do I store multipe msgs or errors in my array and parse them in my ajax call?
here is my code
here I want to validate user input and I would like to validate many fields
if(isset($_POST['txt_username']) &&($_POST['txt_username']!=""))
{
$username =trim( $_POST['txt_username']);
$username = filter_input(INPUT_POST, 'txt_username',
FILTER_SANITIZE_STRING);
}
else
{
}
So how do I do it in the else statement?
here is my ajax call
$.ajax({
type: "POST",
dataType: "json",
cache: false,
data: {txt_username:$("#username").val(), txt_password:$("#password").val()},
beforeSend: function(x) {
if(x && x.overrideMimeType) {
x.overrideMimeType("application/json;charset=UTF-8");
}
},
url: 'proccessing_forms/admin_login.php',
success: function(data) {
// parse the data
}
});
}
You can use multidimensional arrays for this:
$msg = array("success" => array(), "error" => array());
// ... DO you processing on if and else
//When you need to add to an success do
$msg['success'][] = "My Success";
//When you need to add to an error do
$msg['error'][] = "My error";
echo json_encode($msg); exit;
On the ajax’s success event, you can access both of these variables individually.
success: function(data) {
var errors = data.error;
var succesess = data.success
//Process each msg
$.each(errors, function(index, msg) {
console.log(msg);
});
}
