Sending an array to php from JavaScript/jQuery [duplicate]

Question

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Closed 13 years ago.

Possible Duplicate:
send arrays of data from php to javascript

I know there are many questions like this but I find that none of them are that clear.

I have an Ajax request like so:

$.ajax({
 type: "POST",
 url: "parse_array.php",
 data: "array=" + array,
 dataType: "json",
 success: function(data) {
 alert(data.reply);
 }
});

How would I send a JavaScript array to a php file and what would be the php that parses it into a php array look like?

I am using JSON.

Answer 1

Step 1

$.ajax({
 type: "POST",
 url: "parse_array.php",
 data:{ array : JSON.stringify(array) },
 dataType: "json",
 success: function(data) {
 alert(data.reply);
 }
});

Step 2

You php file looks like this:

<?php 
 $array = json_decode($_POST['array']);
 print_r($array); //for debugging purposes only
 $response = array();
 if(isset($array[$blah])) 
 $response['reply']="Success";
 else 
 $response['reply']="Failure";
 echo json_encode($response);

Step 3

The success function

success: function(data) {
 console.log(data.reply);
 alert(data.reply);
 }

• FraserK: Thanks alot for prompt answer :)
• cHao: You'd want to URL-encode the result from JSON.stringify, i'd think, so a stray & in one of your object's strings wouldn't cut your string off prematurely and break your JSON.
• Jason: @cHao Agreed, I've changed it slightly to use the object notation, which will force jQuery to handle the URLencoding so that you can ignore

Answer 2

You can just pass a javascript object.

JS:

var array = [1,2,3];
$.ajax({
 type: "POST",
 url: "parse_array.php",
 data: {"myarray": array, 'anotherarray': array2},
 dataType: "json",
 success: function(data) {
 alert(data.reply); // displays '1' with PHP from below
 }
});

On the php side you need to print JSON code:

PHP:

$array = $_POST['myarray'];
print '{"reply": 1}';

Answer 3

HI,

use json_encode() on parse_array.php

and retrive data with json_decode()

• FraserK: why would i encode the array in php? I want to use it in php.
• FraserK: yes i know how to send json back to jquery. and that was not my question.