Blank page in browser

["Nayeem" <nayeem@xxxxxxxxxxxxxx>]

Dear All,

I'm new to PHP programming and I just try to display small information from
database on web page but its shows blank page. So my code is mention below
and let me know what's wrong in it but when I execute same program on
command prompt then its shows all result correctly with HTML Tags 

<?php

  PutEnv("ORACLE_SID=TSH1");
  PutEnv("ORACLE_HOME=/u01/app/oracle/product/10.1.0/db_1");
  PutEnv("TNS_ADMIN=/var/opt/oracle");

   $db_conn = ocilogon("scott", "tiger", "");

   $cmdstr = "select ename, sal from emp";
   $parsed = ociparse($db_conn, $cmdstr);
   ociexecute($parsed);
   $nrows = ocifetchstatement($parsed, $results);
   echo "Found: $nrows results<br><br>\n";

   echo "<table border=1 cellspacing='0' width='50%'>\n";
   echo "<tr>\n";
   echo "<td><b>Name</b></td>\n";
   echo "<td><b>Salary</b></td>\n";
   echo "</tr>\n";

   for ($i = 0; $i < $nrows; $i++ ) {
         echo "<tr>\n";
         echo "<td>" . $results["ENAME"][$i] . "</td>";
         echo "<td>$ " . number_format($results["SAL"][$i], 2). "</td>";
         echo "</tr>\n";
   }

   echo "</table>\n";

   ?>

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