oci_num_fields

Description

oci_num_fields() returns the number of columns in the statement.

例子 1. oci_num_fields() example <?php     echo "<pre>\n";     $conn = oci_connect("scott", "tiger");    $stmt = oci_parse($conn, "select * from emp");       oci_execute($stmt);       while (oci_fetch($stmt)) {        echo "\n";         $ncols = oci_num_fields($stmt);        for ($i = 1; $i <= $ncols; $i++) {            $column_name  = oci_field_name($stmt, $i);            $column_value = oci_result($stmt, $i);            echo $column_name . ': ' . $column_value . "\n";        }        echo "\n";    }       oci_free_statement($stmt);     oci_close($conn);        echo "</pre>"; ?>

oci_num_fields() returns FALSE on error.