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PHP : Function Reference : PostgreSQL Functions : pg_field_is_null

pg_field_is_null

Test if a field is SQL NULL (PHP 4 >= 4.2.0, PHP 5)
int pg_field_is_null ( resource result, int row, mixed field )
int pg_field_is_null ( resource result, mixed field )

Example 1926. 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";
   }
}
?>

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