function dump(obj) {
    var out = '';
    if(obj && typeof(obj) == 'object'){
	    for (var i in obj) {
	        out += i + ": " + obj[i] + "\n";
	    }
	}
	else out = obj;
    alert(out);
}

<?php
// Set username and password
$username = 'username';
$password = 'password';

// The message you want to send
$message = 'is twittering from php using curl';

// The twitter API address
$url = 'http://twitter.com/statuses/update.xml';
// Alternative JSON version
// $url = 'http://twitter.com/statuses/update.json';
// Set up and execute the curl process

$curl_handle = curl_init();
curl_setopt($curl_handle, CURLOPT_URL, "$url");
curl_setopt($curl_handle, CURLOPT_CONNECTTIMEOUT, 2);
curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl_handle, CURLOPT_POST, 1);
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, "status=$message");
curl_setopt($curl_handle, CURLOPT_USERPWD, "$username:$password");
$buffer = curl_exec($curl_handle);
curl_close($curl_handle);

// check for success or failure
if (empty($buffer)) {
    echo 'message';
} else {
    echo 'success';
}
?>