pg_field_is_null

Description

int pg_field_is_null ( resource result, int row, mixed field)

pg_field_is_null() tests if a field is NULL or not. It returns 1 if the field in the given row is NULL. It returns 0 if the field in the given row is NOT NULL. Field can be specified as column index (number) or fieldname (string). Row numbering starts at 0.

Example 1. pg_field_is_null() example <?php    $dbconn = pg_connect("dbname=publisher") or die ("Could not connect");    $res = pg_query($dbconn, "select * from authors where author = 'Orwell'");    if ($res) {        if (pg_field_is_null($res, 0, "year") == 1) {            echo "The value of the field year is null.\n";        }        if (pg_field_is_null($res, 0, "year") == 0) {            echo "The value of the field year is not null.\n";      }    } ?>