PHP BUTTON İLE MYSQL SORGULAMA

<form name="oneex" action="<?=$PHP_SELF?>" method="post"> 
  <input type="text" name="sayi"><input type="submit" value="Getir"> 
   
  <? 
  //veritabani baglanti ayarlarini yaz buraya 
   
   
  if (isset($sayi)){ 
  $query = mysql_query ("SELECT * FROM deneme where deneme_id like $sayi"); 
  $number=MYSQL_NUM_ROWS($query); 
  if ($number == 0) {echo "<br><b><font color=red>!</font></b> Bu veri bulunamadı!";} 
  else {  while ($row = mysql_fetch_array($query)) { 
  echo "<br>".$row['deneme_metin']; 
  }}} 
  ?>