asd.php

<?php
$url = 'http://www.taringa.net/ajax/mentions/user';

$fields = array(
	'uid' => '25854531' //Id del usuario
);
$fields_string="";
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
rtrim($fields_string, '&');

$ch = curl_init();

curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$result = curl_exec($ch);

curl_close($ch);

$data = json_decode($result,true);

echo $data['data']['userStatus'];
?>

Fabi ♥