yine aynı hata, bütün kodları yazıyorum;

connect.php

<?php
    $baglanti = odbc_connect('DRIVER={SQL Server};SERVER=KAAN-BILGISAYAR\SQL_2005;DATABASE=DATA_SABIS_MEHTAPTURK','sa','12345');
    if (!$baglanti) {
      //  die("no.");
    }
    //echo "ok.";
    ?>
index.php

<?php
    include('connect.php');
    ?>
   <FORM ACTION="vericek.php" METHOD="POST">
        
        <p>
          <label>
          <input type="text" name="tc" id="tc" />
          </label>
</p>
        <p>
          <input type="Submit" value="Gönder">
         </p>
   </FORM>

vericek.php

<?php
    include('connect.php');
   
   $sql_sorguCumlen=mssql_query("SELECT * from s_Personel WHERE TC_Kimlik_No='$tc'");
 while($sorguCumlen=mssql_fetch_array($sql_sorguCumlen))
{
 echo $sorguCumlen[TC_Kimlik_No];
}
    
?>