Question

I am stuck on an issue with reading data from a server. The data is stored as a csv string and i am using php to read the data.

Reading Data

<?php 
    header('Content-Type: text/plain'); 
    $csv = file_get_contents('string.csv'); 
    echo $csv; 
?>

$.ajax({ 
    type: 'GET', 
    url: 'http://www.foobar.com/csv.php',
    async: false,
    data: null, 
    success: function(text) { 
        sv_serverArray = text.split(",");
        alert(sv_serverArray);
    } 
});

The Ajax call is done on the domain http://www.example.com the php file is served on http://foobar.com/csv.php

When i post the data from http://www.example.com to http://www.foobar.com/write.php it works! But not the other way around.

Writing Data

<?php
    $list = $_POST["array"];
    $fp = fopen('string.csv', 'w');
    fputcsv($fp, $list);
    fclose($fp);
?>

$.post("http://www.foobar.com/write.php", { 'array': sv_defaultArray});

What is the issue and why can i only write and not read ?! if anything i should be getting errors the other way around !!

Answer 1

The $.post() generates a underwater, and uses that to post. When posted it is a real request.
The $.get() uses a XMLHttpRequest, which is bound by the Same-Origin Policy. The best way to circumvent this is jsonp. (either convert the CSV to json, or encapsulate it).