oci_field_size

<?php
// Создайте таблицу:
// CREATE TABLE mytab (number_col NUMBER, varchar2_col varchar2(1),
// clob_col CLOB, date_col DATE);
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
 $m = oci_error();
 trigger_error(htmlentities($m['message']), E_USER_ERROR);
}
$stid = oci_parse($conn, "SELECT * FROM mytab");
oci_execute($stid, OCI_DESCRIBE_ONLY); // // используйте OCI_DESCRIBE_ONLY, если не получаете данных
echo "<table border=\"1\">\n";
echo "<tr>";
echo "<th>Name</th>";
echo "<th>Type</th>";
echo "<th>Length</th>";
echo "</tr>\n";
$ncols = oci_num_fields($stid);
for ($i = 1; $i <= $ncols; $i++) {
 $column_name = oci_field_name($stid, $i);
 $column_type = oci_field_type($stid, $i);
 $column_size = oci_field_size($stid, $i);
 echo "<tr>";
 echo "<td>$column_name</td>";
 echo "<td>$column_type</td>";
 echo "<td>$column_size</td>";
 echo "</tr>\n";
}
echo "</table>\n";
// Выведет:
// Name Type Length
// NUMBER_COL NUMBER 22
// VARCHAR2_COL VARCHAR2 1
// CLOB_COL CLOB 4000
// DATE_COL DATE 7
oci_free_statement($stid);
oci_close($conn);
?>