DevOps, CI/CD and Automation

I am a novice with PHP and trying to plearn more........I need to fetch column names from oracle and display the column name as a header for result column. Query below does everything as expected but will not fetch column name. Is there are way to fetch column names from oracle

PHP 5.2 using OCI8

Any help is greately appreciated.


<?php
$co = oci_connect('user', 'pass', '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= ConnectionStringRemoved)(PORT=1521))
(CONNECT_DATA=(SERVER=DEDICATED) (SERVICE_NAME = ordb)))');

$st = oci_parse($conn, "Select ID, TNAME From SCH.TESTTABLE");
echo $st;
oci_execute($st);

echo "<table border='1'>\n";
while ($row = oci_fetch_array($st, OCI_ASSOC+OCI_RETURN_NULLS)) {
echo "<tr>\n";
foreach ($row as $item) {
echo " <td>" . ($item !== null ? htmlentities($item, ENT_QUOTES) : "&nbsp;") . "</td>\n";
}
echo "</tr>\n";
}
echo "</table>\n";

?>