$ch = curl_init();
$curlConfig = array(
    CURLOPT_URL            => "http://www.example.com/yourscript.php",
    CURLOPT_POST           => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POSTFIELDS     => array(
        'field1' => 'some date',
        'field2' => 'some other data',
    )
);
curl_setopt_array($ch, $curlConfig);
$result = curl_exec($ch);
curl_close($ch);

// result sent by the remote server is in $result