Returns the number of result columns in a statement

# oci_num_fields

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_num_fields — Returns the number of result columns in a statement

### Description

function oci_num_fields(resource `$statement`): int

Gets the number of columns in the given `statement`.

### Parameters

`statement`

  A valid OCI statement identifier.

### Return Values

Returns the number of columns as an int.

### Examples

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);

    ?>

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