$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,"http://www.bbb.com/verigir.php");
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,"post alanların");
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,10);
curl_setopt($ch,CURLOPT_USERAGENT,"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)");
$data = curl_exec($ch);
curl_close($ch);

bunu aaaa.com daki sitene koyarsan bbb.com daki verigir.php ye belirttiğin değerleri post eder. verigir.php yi de post ile gelen verileri database e giricek şekilde ayarlarsın.