pg_field_is_null

(PHP 4 >= 4.2.0, PHP 5)

pg_field_is_null -- Test if a 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";
      }
   }
?>

Note: This function used to be called pg_fieldisnull().


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