Get the value of serialize data

a:12:{
s:7:"country";
s:2:"CA";
s:4:"city";
s:8:"Brampton";
s:5:"state";
s:7:"Ontario";
s:8:"zip_code";
s:6:"L6T4E7";
s:3:"age";
s:13:"25–34 years";
s:8:"blog_url";
s:22:"http://www.blog.com";
s:16:"blog_description";
s:106:"A blog about blogging";
s:15:"monthly_uniques";
s:4:"1000";
s:13:"facebook_page";
s:55:"http://www.facebook.com/myfacebookpage";
s:14:"facebook_likes";
s:3:"1428";
s:15:"twitter_account";
s:31:"http://twitter.com/mytwitterpage";
s:17:"twitter_followers";
s:3:"5849";}

use php function unserialize()

$data = array( 'apple', 'banana', 'orange' );

echo serialize( $data );

// Result is a string we can unserialize into an array:

// a:3:{i:0;s:5:"apple";i:1;s:6:"banana";i:2;s:6:"orange";}






Retrieving serialize data in a php file called using ajax

Your js should be like this:

var str = $("form").serializeArray();
$.ajax({  
    type: "POST",  
    url: "update.php",  
    data: str,  
    success: function(value) {  
            $("#data").html(value);
    }
});
With php you should loop your result array.
$box = $_POST['box'];
foreach ($box as $x) {
    echo $x;
}
Note  -- You have to use serializeArray function in jQuery. Then it will work with this code.