$karsilink="http://www.bizimlinkiaradigimizlink.com";
$bizimlink="http://www.bizimlink.com";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$bizimlink);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$sonuc=curl_exec ($ch);
curl_close ($ch);
preg_match ("|<[aA] (.+?)".$karsilink."(.+?)>(.+?)<\/[aA]>|i", $sonuc, $denk);

if (count($denk)>0){
	echo "Bulundu";
}else{
	echo "Bulunamadı";
}