The following is not immediately obvious:
If you need the number of columns in a REF CURSOR returned from a PL/SQL procedure, you need to use OCINumColumns() on the cursor handle returned by OCINewCursor after it is bound and executed, not the statement handle. Same applies for OCIColumnName() and friends.
oci_num_fields
(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
oci_num_fields — Returns the number of result columns in a statement
Descrierea
oci_num_fields
( resource
$statement
) : int
Gets the number of columns in the given statement.
Parametri
-
statement -
A valid OCI statement identifier.
Valorile întoarse
Returns the number of columns as an integer, or false on errors.
Exemple
Example #1 oci_num_fields() example
<?php
// Create the table with:
// CREATE TABLE mytab (id NUMBER, quantity NUMBER);
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$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); // Use OCI_DESCRIBE_ONLY if not fetching rows
$ncols = oci_num_fields($stid);
for ($i = 1; $i <= $ncols; $i++) {
echo oci_field_name($stid, $i) . " " . oci_field_type($stid, $i) . "<br>\n";
}
// Outputs:
// ID NUMBER
// QUANTITY NUMBER
oci_free_statement($stid);
oci_close($conn);
?>
Note
Notă:
In PHP versions before 5.0.0 you must use ocinumcols() instead. This name still can be used, it was left as alias of oci_num_fields() for downwards compatability. This, however, is deprecated and not recommended.
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User Contributed Notes 1 note
jnield at impole dot com ¶
25 years ago
