pass arrays and variables from jquery to php at the same time - php

Question

I want to pass arrays and other variables from jquery code to php using post request but I don't know how to pass arrays and variables at the same time.
I tried this code:
var new_location_name = "";
var new_location_id = "";
var old_location_name = [];
var selected_name = [];
var selected_id = [];
var user = '<?php echo $current_user ;?>';
$(document).ready(
$("#transfer").click(function(){
$.ajax({
type: "POST",
url: "update.php",
data: "username="+user+"&new_location_name="+new_location_name+"&new_location_id"+new_location_id+"&"+{ old_location_name : old_location_name }+"&"+{ selected_name : selected_name }+"&"+{ selected_id : selected_id },
});
return false;
});
});

Answer 1

Create an object, serialize it and send it:
var obj = {
key1: 'value1',
key2: ['one','two','three'],
key3: {
key3_0: 'value3_0'
}
}
var jsonData = JSON.stringify(obj);
$.ajax({
method: "POST",
url: "update.php",
data: jsonData
});

Answer 2

JQuery Data:
data:
{
username: user,
new_location_name: new_location_name,
new_location_id: new_location_id,
old_location_name: old_location_name,
selected_name : selected_name,
selected_id : selected_id
}
In your PHP Script
<? $oldLocationName = $_REQUEST['old_location_name']; ?>
and so on.

Answer 3

You can pass multiple parameters as arrays or strings the same. The left hand side of the data is the value that the API is expecting as the parameter name.
var new_location_name = "";
var new_location_id = "";
var old_location_name = [];
var selected_name = [];
var selected_id = [];
var user = '<?php echo $current_user ;?>';
$(document).ready(
$("#transfer").click(function(){
$.ajax({
type: "POST",
url: "update.php",
data: {username: user,
new_location_name: new_location_name,
old_location_name: old_location_name
}
});
return false;
});
});
You can read more in this question: Pass Multiple Parameters to jQuery ajax call

Answer 4

Try this snippet
var array = [];
$.ajax({ url: 'update.php',
data: {'array' : array},
type: 'post',
dataType:'json',
success: function(output) {
alert(output);
},
error: function(request, status, error) {
alert("Error");
}
});

Answer 5

First time Check file, this script must be in .php file, not .js file;