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";       }    } ?>